|Question 20Verbal

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While researching a topic, a student has taken the following notes:
- The Los Ajos-La Madera Mountains are a mountain range located in northwestern Mexico.
- The range is one of the dozens of "sky islands" in the southwestern US and northwestern Mexico.
- A sky island is an isolated mountain range whose environment differs drastically from that of the surrounding lowlands.
- The US Forest Service (USFS) said, "The mountains are 'islands' surrounded by deserts that are 'seas.'"
- The USFS said. "Each Sky Island is a unique ecosystem."
The student wants to provide an example of a sky island. Which choice most effectively uses relevant information from the notes to accomplish this goal?
In the southwestern US and northwestern Mexico, there are dozens of sky islands: isolated mountain ranges whose environments differ drastically from that of the surrounding lowlands.
A
The USFS considers each of the sky islands, whose environments differ drastically from that of the surrounding lowlands, to be a "unique ecosystem."
B
There are dozens of sky islands in the southwestern US and northwestern Mexico, such as the Los Ajos-La Madera Mountains.
C
Sky islands are isolated mountain ranges whose environments differ drastically from that of the surrounding lowlands; as the USFS puts it, "the mountains are 'islands' surrounded by deserts that are 'seas.'"
D