Why do earthquakes often happen near subduction zones?

a. subduction zones have low granite content.

b. subduction mones are near volcanoes.

c. subduction zones have weak rocks.

d. subduction zones are near plate boundaries.

D.Subduction zones are near plate boundaries

Explanation:

Subduction zones are plate boundaries where two plates meet ,one plate is thrust beneath the other.Due to this earthquakes and Volcanic eruptions occurred. this geohazard affects millions of people around the globe, specifically at edge of the Pacific Ocean.This edges consists of many subduction zones. Megathrust is the largest earthquake occurred at the interface between the boundaries of the two plates.  

b. read the phase at the intersection of any given temperature and pressure.

i think its y= -4x-14