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SAT Reading and Writing

Rhetorical Synthesis

Rhetorical Synthesis is a skill in the Expression of Ideas domain of the Digital SAT Reading and Writing section. These are practice questions on it, and each answer choice comes with an explanation of why it is right or wrong.

17 questions. After every answer you’ll see why each choice is right or wrong, not just the one you picked.

Round length
Difficulty (none selected means all)

Sample questions

Open a question to see the answer choices and the correct answer.

While researching a topic, a student has taken the following notes: • The Vasa was a Swedish warship built in the 1620s. • It sank on its maiden voyage in 1628, less than a mile into its journey. • The ship was top-heavy due to an extra gun deck added late in construction. • It was recovered largely intact from the seafloor in 1961. • The ship is now displayed in a dedicated museum in Stockholm. The student wants to explain why the Vasa sank. Which choice most effectively uses relevant information from the notes to accomplish this goal?
  1. A. Built in the 1620s, the Vasa is now displayed in a dedicated museum in Stockholm.
  2. B. The Vasa, a Swedish warship built in the 1620s, sank on its maiden voyage in 1628 because an extra gun deck added late in construction made the ship top-heavy. ✓
  3. C. The Vasa sank in 1628, less than a mile into its maiden voyage, and was recovered largely intact from the seafloor in 1961.
  4. D. The Vasa was a Swedish warship that sank less than a mile into its maiden voyage in 1628.

Correct answer: B. This choice states the ship sank and directly explains why, citing the top-heavy design caused by the added gun deck.

While researching a topic, a student has taken the following notes: • Octopuses have three hearts. • Two of the hearts pump blood to the gills. • The third heart pumps blood to the rest of the body. • The third heart stops beating when the octopus swims. • Because of this, octopuses tire quickly and prefer crawling to swimming. The student wants to explain why octopuses tend to prefer crawling over swimming. Which choice most effectively uses relevant information from the notes to accomplish this goal?
  1. A. Octopuses have three hearts: two that pump blood to the gills and one that pumps blood to the rest of the body.
  2. B. An octopus's third heart pumps blood to the rest of its body, unlike its other two hearts, which serve the gills.
  3. C. Because an octopus's third heart, which pumps blood to the rest of its body, stops beating while it swims, octopuses tire quickly when swimming and tend to prefer crawling instead. ✓
  4. D. Octopuses prefer crawling to swimming, even though they have three hearts.

Correct answer: C. This choice directly connects the stopping of the third heart during swimming to why octopuses tire quickly and prefer crawling.

While researching a topic, a student has taken the following notes: • Bioluminescent fungi glow due to a chemical reaction involving an enzyme called luciferase. • Scientists have identified the specific genes responsible for this glow in several fungal species. • Researchers have since inserted these genes into tobacco plants. • The modified tobacco plants glow visibly in the dark without any external light source. • The researchers hope the technique could eventually be used to create self-illuminating plants for practical use, such as low-energy lighting. The student wants to describe a potential future application of the researchers' technique. Which choice most effectively uses relevant information from the notes to accomplish this goal?
  1. A. Modified tobacco plants now glow visibly in the dark without requiring an external light source.
  2. B. Scientists have identified the specific genes responsible for fungal bioluminescence in several species.
  3. C. Bioluminescent fungi glow due to a chemical reaction involving an enzyme called luciferase.
  4. D. Researchers hope that their gene-insertion technique, which has already produced glowing tobacco plants, could eventually be used to create self-illuminating plants for practical purposes like low-energy lighting. ✓

Correct answer: D. This choice describes the hoped-for future use of the technique, low-energy lighting from self-illuminating plants, directly addressing the stated goal.

A student has taken the following notes: The Antikythera mechanism was recovered from a shipwreck near a Greek island in 1901. It is a hand-cranked bronze device with over 30 interlocking gears. Researchers believe it modeled the positions of the sun, moon, and five known planets. It dates to roughly 100 BCE, more than a thousand years before comparable mechanical devices reappear in Europe. Its complexity was not matched by any known surviving device until medieval astronomical clocks. The student wants to emphasize how far ahead of its time the device was. Which choice most effectively uses relevant information from the notes to accomplish this goal?
  1. A. Discovered in a 1901 shipwreck, the Antikythera mechanism used over 30 bronze gears to track celestial positions, a level of complexity not seen again in surviving devices for more than a thousand years. ✓
  2. B. The Antikythera mechanism, found near a Greek island, was a hand-cranked bronze device with interlocking gears.
  3. C. Researchers recovered the Antikythera mechanism from a shipwreck in 1901 and later studied its gears in a laboratory.
  4. D. Medieval astronomical clocks were the first devices to match the complexity of the ancient Antikythera mechanism.

Correct answer: A. Correct — this choice pairs the device's sophistication, 30 gears tracking celestial bodies, with the specific thousand-year gap before anything comparable reappeared, which directly demonstrates how far ahead of its time it was.

A student has taken the following notes: Octopuses have roughly 500 million neurons total. About two-thirds of those neurons are located in the arms themselves, not the central brain. Severed octopus arms have been observed continuing to react to stimuli for over an hour. Each arm can independently explore surfaces and manipulate objects without direct signals from the brain. Scientists describe this as a highly decentralized nervous system. The student wants to support the claim that octopus arms can act with a notable degree of independence from the brain. Which choice most effectively uses relevant information from the notes to accomplish this goal?
  1. A. Octopuses have about 500 million neurons, a number that reflects considerable neural complexity for an invertebrate.
  2. B. Because roughly two-thirds of an octopus's neurons reside in its arms rather than its brain, each arm can explore and manipulate objects on its own, and a severed arm can even keep reacting to stimuli for over an hour. ✓
  3. C. Scientists studying octopus nervous systems have described them as highly decentralized organisms.
  4. D. A severed octopus arm can continue reacting to stimuli, which scientists find scientifically interesting.

Correct answer: B. Correct — this choice combines the specific neuron distribution with two concrete behavioral examples of arm independence, directly and thoroughly supporting the stated claim.