Question

what is an example of rotary motion?
bouncing a basketball
the wheels of a skateboard rolling
running in a straight line
blowing up a balloon

Explanation:

Rotary motion is the movement of an object around an axis. The wheels of a skateboard roll by spinning around their central axes, which fits rotary motion. Bouncing a basketball is vertical motion, running straight is linear motion, and blowing up a balloon is expansion, none of which are rotary.

Answer:

B. The wheels of a skateboard rolling