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Which of these rocks forms under the MOST extreme conditions of heat and pressure?

Select one:

Agneiss
Blimestone
Cshale
Dsandstone

Verified Answer :

It is answer choice A ;)))

Answer: a. Gneiss

Explanation:

Gneiss is a most common and widely available rock. This is a kind of metamorphic rock. It is formed under the condition of high temperature and high-pressure. The formation process is initiate through other types of rocks that are igneous or sedimentary rocks.