Which landform is a sandbank that runs roughly parallel to the shoreline and is formed by the deposition from longshore drift?

• A. Lagoon
• B. Moraine
• C. Longshore Bar
• D. Inlet

Answer: (C)

The key idea is how waves moving along the coast transport sediment and create offshore features. When waves hit the shore at an angle, sediment is carried along the coast by longshore drift. As energy decreases offshore, some of this sediment settles out, building up a sandbank that lies parallel to the shoreline. This offshore parallel deposit is the longshore bar, formed specifically by the deposition from longshore drift.

Lagoons are shallow water bodies behind barriers, moraine is glacially deposited debris, and an inlet is a water passage between landmasses. These describe different coast features, not the offshore parallel sandbar created by drift.