To use remote sensing correctly, a geographer needs to be physically at the place of study.

The answer i think is d

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).

Answerseafloor spreading;