SAT Reading and Writing · Rhetorical Synthesis Practice Question

While researching a topic, a student has taken the following notes: <ul> <li>DNA is a long molecule found in nearly all cells.</li> <li>It carries genetic instructions for development and function.</li> <li>It consists of two strands wound into a double helix.</li> <li>The strands are made of four bases: A, T, C, G.</li> <li>Pairs of bases (A-T and C-G) form the rungs of the helix.</li> </ul> The student wants to summarize DNA for an audience unfamiliar with the topic. Which choice most effectively uses relevant information from the notes to accomplish this goal?

Which choice most effectively makes the student's point?

A
$Pairs (A-T and C-G) form the rungs of the helix.$
B
$DNA carries genetic instructions.$
C
$Strands are made of four bases.$
D
$DNA is a double-helix molecule found in nearly all cells, carrying genetic instructions through sequences of four bases (A, T, C, G).$
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Explanation

A summary defines and explains. Choice C identifies DNA, its structure, location, and function. The others give isolated parts.

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