Garrett notices a small island has formed off the coast of his hometown in florida. which of the following best describes what caused the island to form?

a. the sand was deposited into a pile by the action of waves.
b. beach sand that was eroded from the local beach formed an island.
c. the sand was a remnant from a tropical storm that had a large storm surge.
d. erosion of the areas behind the island caused it to be surrounded by water. a.