Which of the following would be an important observation that could you identify a metamorphic rock? choose one: a. the presence of calcite b. sand grains that break along grain boundaries c. the arrangement of mineral grains into a foliation d. large crystal size

An important observation that could help you identify a metamorphic rock is c. the arrangement of mineral grains into a foliation.

Explanation:

Metamorphic rocks can be identified by the foliation which is the layered characteristics of these type of rocks. The process occurs during recrystallization resulting in a foliated rock with bands of different colors depending on the minerals that form them.

answer(c) carved on a babylonian clay tablet that showed earth as a flat circular disk;