Answer:
C) the other car
Step-by-step explanation:
After they collide, the force that would affect the most the cars would be the force or momentum that the other car is carrying, in this case the one that would take the worst part would be the one that has less speed, because has less momentum, so it would be that car has the slowest speed taking the most of the damage due to the difference in the kinetic energy, and that would be the determining force to take into account after the collision.