Final answer:
The best example of an elastic collision, where no kinetic energy is lost and the objects rebound without deformation, is two billiard balls colliding (option C).
Step-by-step explanation:
The best example of an elastic collision is option C: Two billiard balls colliding without losing kinetic energy. An elastic collision is characterized by the conservation of kinetic energy. In such a collision, no internal kinetic energy is lost, and the objects do not become deformed or stuck together. They rebound off each other with no loss in the total kinetic energy of the system.
Comparatively, options A, B, and D describe scenarios where energy is dissipated in some form, such as in heat, sound, deformation, or other energy conversion, which are not characteristics of an elastic collision. For example, two cars colliding on an icy road might conserve momentum, but kinetic energy would be lost in the process due to deformation and energy conversion, making such a collision inelastic.