Question

in the video, what object is used to represent energy? a red ball a hand - cranked radio a tea kettle a black cube

Explanation:

The question asks which object represents energy in the video. By observing the left - side image (where the "Energy" label is near the black cube, but the red ball is being held and likely symbolizes energy transfer or presence as a more dynamic element compared to the static black cube, hand - cranked radio, or tea kettle which are not directly under the "Energy" context in the visual setup).

Answer:

A. A red ball