One cause of tsunami's is earthquakes in the ocean floor in the image which point represents the hypocenter an underwater earthquake

Point D

Explanation:

The hypocenter of an earthquake is usually defined as the point from which an earthquake originates. It is also known as the focus of an earthquake.

In the given image, the plates share a type of plate boundary, where the plate moves along the fault line. Due to this movement, the rocks are adversely affected, and it tries to adjust along this region, as a result of which, a certain amount of energy is released. This energy is propagated towards the surface of the earth, affecting the water body, generating large waves which are commonly known as tsunami.

Thus, in the image above, the hypocenter (focus) of the underwater earthquake is point D which lies on the fault line.

Thus, the correct answer is Point D.