SAT Reading and Writing · Rhetorical Synthesis Practice Question

While researching a topic, a student has taken the following notes: <ul> <li>Standard atmospheric pressure at sea level is about 101 kPa.</li> <li>At the summit of Mount Everest, pressure is about 33 kPa.</li> <li>At cruising altitude (11 km), commercial aircraft cabins maintain about 75-80 kPa.</li> <li>Pressure decreases with altitude.</li> <li>Lower pressure means less oxygen available per breath.</li> </ul> The student wants to contrast pressure at sea level and at Everest's summit. Which choice most effectively uses relevant information from the notes to accomplish this goal?

Which choice most effectively makes the student's point?

A
$Lower pressure means less oxygen per breath.$
B
$Atmospheric pressure at sea level is about 101 kPa, but at Everest's summit it falls to about 33 kPa.$
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C
$Aircraft cabins maintain 75-80 kPa.$
D
$Pressure decreases with altitude.$

Explanation

The goal is contrasting sea level and Everest. Choice C gives both numbers. A states a principle, B states an effect, D describes a third location.

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