A speeding car collides with an unlucky bug flying across the road

Which explains why the impact doesn't equally damage the car and the bug

A. The car has more momentum

B. the bug is traveling faster

C. The bug has more momentum

D. The net force is zero

The collision produces forces between the car and the bug. These forces depend on the momentums of the objects that collide. Momentum is the product of mass and velocity. The greater the mass the smaller the acceleration. That is the Newton's second law. Because the mass of the car is greater, it's momentum is also greater and the accelaration is smaller. so, the bigger momentum of the car explains the different damage.