Select all the depositional feautures listed below a valley b aquifer c delta d river?

The depositional features from the options provided are c) delta. A delta forms at the mouth of a river where sediment is deposited as the water slows down, creating landforms. A valley is a landform shaped by erosion and does not represent a depositional feature, while an aquifer is a geological formation that can hold water but is not a depositional feature. A river, on the other hand, is a flowing body of water and not a depositional feature itself.