Asedimentary rock containing a fossilized sea shell had been found. what does this tell you about the area at the time the rock was formed?

It was once a body of water there, having the shell in the rock means that a sea creature lived there so there must have been water there at one time in history.

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).

A. it is created from magma. the agents of a metamorphic rock is heat and pressure. (heat from intrusion of magma or burial)