Which answer explains why plate B is moving underneath plate A A. Plate B is more dense than plate A because it is composed of oceanic crust

B. Plate A is more dense than plate B because it is composed of oceanic crust

C. plate B is more dense than plate A because it is composed of continental crust

D. Plate A is more dense than plate B because it is composed of continental crust

A.

Explanation:

Earth is composed of different layers and one layer moves over another due to differences in the densities.

According to the physics of density, a substance having less density floats over a higher density substance. The oceanic crust has more density than the continental crust that is why continental crust float over oceanic crust.

So in the given example, plate B is moving below the plate A, it means plate B is more dense than plate A because plate B is composed of oceanic crust . For example : continents float over the asthenosphere (a layer below the lithosphere).

Hence, the correct answer is "A ".

we need answer choices

where's the following? you gotta add it to know what the choices are

explanation: