Which change would most likely occur if this rock became buried deep within earth’s crust and was subjected to intense heat and pressure, but did not melt?

A) The density of the pebbles and sand would decrease.

B) The rock would become a plutonic rock composed mostly of quartz.

C) The rock would become more felsic with a higher concentration of magnesium.

D) The pebbles would become distorted and the sand would be recrystallized.

If so, then the answer is letter D. 

>  The change that would most likely to occur if this rock became buried deep within Earth’s crust and was subjected to intense heat and pressure, but did not melt is: The pebbles would become distorted and the sand would be recrystallized.

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