How is plate tectonics responsible for the formation of earths deepest ocean trench?
a.) two plates moved past each other in opposite directions.
b.) a denser plate converged with a lighter plate
c.) two plates pulled apart from each other
d.) a plate moved over a hot spot in the mantle

B) a denser plate converged with a lighter plate

Explanation:

Convergent plate boundary is the formation of the deepest ocean trenches in the periphery of the plate margins. When continent plate and oceanic plate move towards each other in the same direction, oceanic plates subducted under beneath the continental plate because oceanic plates are denser ones and continent are lighter plates. If two plates are pulled apart from each other otherwise known as divergent plate boundary, it is the result of ridge formation.

answer; (d) melting of sea ice;

the correct answer is c