why do surface waves break along the shore? a the waves start to drag on the bottom. b the tops of the waves…

Brief Explanations:

As surface - waves approach the shore, the water depth decreases. The lower part of the wave starts to drag on the bottom due to friction, which slows it down. Meanwhile, the tops of the waves are still moving at a relatively faster speed, making the waves steeper. As the steepness increases, the wave eventually breaks. So, the waves start to drag on the bottom and the tops of the waves speed up are correct reasons, and the waves actually become steeper rather than less steep.

Answer:

A. The waves start to drag on the bottom.