Question

according to the kinetic molecular theory, gases
a have a defined volume
b have inelastic collision
c have completely elastic collisions
d have different colors

Explanation:

According to the Kinetic - Molecular Theory, gas particles have completely elastic collisions. Gas particles do not have a defined volume as they expand to fill their container. Collisions are elastic, not inelastic. And the theory does not deal with the color of gases.

Answer:

C. Have completely elastic collisions