C. endothermic
An endothermic process takes heat from the surroundings while an exothermic process gives out heat to the surroundings.
Answer:
c
Explanation:
a, b, and d are examples of moving forward
while c is moving backwards.
The change in velocity is +4 m/s to the right (or -4 m/s to the left).
The object's mass is irrelevant.
