Question

which is the best analogy of a wave?
a wave is like building a tower.
a wave is like shaking a hand.
a wave is like water rippling in a pond.
a wave is like knocking down a building.

Explanation:

A wave is a disturbance that travels through a medium. Water rippling in a pond is a common example of a wave as it shows the propagation of a disturbance (the ripple) through the water (the medium). Building a tower, shaking a hand, and knocking down a building do not represent the concept of a wave.

Answer:

C. A wave is like water rippling in a pond.