Question

where do earthquakes most commonly occur?
only in the ocean
randomly around the world
along tectonic plate edges

Explanation:

Earthquakes occur due to the movement of tectonic plates. The edges of these plates are where stress builds up and is released as earthquakes. They don't occur only in the ocean (land - based earthquakes exist) and are not random (correlated with plate boundaries).

Answer:

C. along tectonic plate edges