Based on the reading how do you think the Hawaiian island chain formed? Be sure to mention the initial information of the island and the direction of Pacific and is moving. Short answer please.

The Hawaiian islands were formed by a hot spot in the middle of the pacific plate. The tectonic plate moved over the hot spot forming the islands.

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.