Why are the properties of the athenosphere important check all that apply​

The answer would be A I think

I agree the answer looks like it would be A.

Sequoia national park  /  inyo national forest, california, u.s. mount whitney is the tallest mountain in california, as well as the highest summit in the contiguous united states and thesierra nevada—with an elevation of 14,505 feet (4,421 m).

Answerwide-open;