Answer:
D) Toward and away from the shore with individual waves.
Step-by-step explanation:
D) Toward and away from the shore with individual waves.
Reason: A beach sand grain spends most of its time coming in, going out, coming in, going out, and not getting anywhere. A tiny bias exists, such that the in and out will move slightly along the coast, and will cause seasonal changes, and will move some sand to deep water.