Pls pls pls pls help me pls Which of these would be an example of erosion?

Group of answer choices

A mudslide flowing down a steep hill

Waves dropping sand on the beack

Deltas forming at the mouths of rivers

Flood water wearing down a canyon wall

Deposition is

Group of answer choices

when sediments and rocks are dropped at the end of a river

a destructive force that breaks down beaches

the aftermath of an earthquake

when rocks and sediment are taken away