Which of the following is correct regarding permafrost?
A) It develops where soil or rock temperatures are below freezing for at least two years.
B) It primarily occurs in areas covered with glaciers.
C) The surface layer of permafrost never thaws, even in the warm season.
D) It tends to occur at lower elevations in the midlatitudes than in the high latitudes.

Question

Quizplus · Accepted Answer

Permafrost develops where soil or rock temperatures are below freezing for at least two years. This can occur in both high and midlatitudes, as well as in areas without glaciers.

Answer: C 
 The surface layer of permafrost never thaws, even in the warm season, which is why it is referred to as "perma"-frost.

Option B and D are incorrect.

Which of the Following Is Correct Regarding Permafrost