The way an object moves relative to a reference point describes the object's .

A.
motion

B.
location

C.
position

D.
distance

a measure of both length and the direction of an object's path from its starting point straight to its ending point. ... Distance between reference points and other locations can be measured in ... It Has Experienced Motion. When an object changes position over time, speed describes how quickly an object changes position.

Explanation:

answer a fan shaped mass of sediment deposited at the base of a mountain front do to an abrupt change in stream gradient;