which statement best describes subduction?

A. two plates slide past each other.

B. a denser plate moves under a less dense plate

C. a less dense plate moves under a denser plate.

D. two plates move toward each other

The best description of subduction is a a denser plate moving under a less denser plate.

Subduction occurs in a tectonic plate when one edge of a plate goes below another plate edge.

It occurs when a plate that is denser or heavier goes under another plate that is lighter. The lighter plate is the young one.

These two would grind against each other. An effect of this grinding movement is that there would be earthquakes.

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B. a denser plate moves under a less dense plate

Explanation:

subduction is heavier plate moving under lighter plate