Question

What is true of sand dunes?
Responses
A They are built by waves.They are built by waves.
B They are made by rivers cutting through land.They are made by rivers cutting through land.
C They are built by water carrying sediment away.They are built by water carrying sediment away.
D They are built by the deposition of sand by wind.They are built by the deposition of sand by wind.

Answer 1

D. They are built by the deposition of sand by wind.