Question

7 permanent shape changes to the fragile things. a collision b kinetic energy c damage d contact force e deform f line of best fit

Explanation:

Permanent shape changes to fragile things are a form of damage. A collision is an event that can cause damage, kinetic energy is a property related to motion that can lead to damage, contact force can cause damage, and deform is the action of changing shape which is related to damage. A line of best - fit is a statistical concept and not related here.

Answer:

C. damage