Question

The greatest amount of energy

Listed down here
1.joule
2.watt
3.watt-hour
4.newton-meter

Answer 1

The answer is choice-3.

1 newton-meter and 1 joule are the same amount of energy, and 1 watt-hour is 3,600 of those.

"Watt" doesn't belong on the list. It's a unit of power, not energy.