Question

medium sized sediments carried close to the ground move by ______.
a saltation
b suspension
c creep
d carry

Explanation:

Saltation is the transport process where medium-sized sediments bounce and hop close to the ground surface. Suspension carries fine particles high in the flow, creep moves large sediments along the ground slowly, and "carry" is a general, non-specific term.

Answer:

a. Saltation