The correct answer would be A. The agent of metamorphism that would cause for the overall composition of a rock to change would be hydrothermal solutions. These solutions contain mineral substances that are dissolved in the hot water. When in contact with a rock, the minerals may change the composition of the rock.
I believe the word is stubborn.
The answer would be (levels) goodluck
Answer:
c . All organisms have cells with different shapes and functions.