Relative motion can best be defined as

Athe motion of an object with a constant velocity.
Bthe motion of one object as it appears to another object.
Cthe change in position of an object divided by change in time.
Dthe amount of motion that an object experiences over a given period of time.

Verified Answer :

Relative motion can best be defined as B the motion of one object as it appears to another object.
An example is when you are in a car the car has the actual motion because it is the one moving but you are also moving because of relative motion.