While researching a topic, a student has taken the following notes: Earthquakes start at a point called a “focus” and

Question

While researching a topic, a student has taken the following notes:

Earthquakes start at a point called a “focus” and spread out from there as seismic waves.
The two types of seismic waves that travel beneath Earth’s surface are primary waves (P waves) and secondary waves (S waves).
P waves travel more quickly beneath Earth’s surface than do S waves.
P waves compress and expand the ground, causing it to move backward and forward.
S waves cause the ground to move from side to side.

The student wants to emphasize a similarity between P waves and S waves. Which choice most effectively uses relevant information from the notes to accomplish this goal?

Accepted Answer

Choice A is the best answer. The sentence emphasizes a similarity between P waves and S waves, noting that they both travel beneath Earth&rsquo;s surface, thereby causing the ground to move. Choice B is incorrect. The sentence emphasizes a difference between P waves and S waves, noting that P waves travel faster than S waves; it doesn&rsquo;t emphasize a similarity between the two types of waves. Choice C is incorrect. The sentence emphasizes how P waves move; it doesn&rsquo;t emphasize a similarity between P waves and S waves. Choice D is incorrect. While the sentence acknowledges that P waves and S waves start at the same point, it doesn&rsquo;t emphasize a similarity; instead, the sentence emphasizes a difference between the two types of waves, noting that they behave very differently.

Question while-