which of these energy resources can produce the most amount of energy from the smallest amount of fuel.

b) Uranium

Explanation:

Uranium is a chemical element that has high radioactivity. The amount of energy that it produces surpasses all other listed resources.

The energy that comes from the uranium is the one coming from nuclear forces. These nuclear forces are far stronger than the other three.

Coal, petroleum and natural gas all have chemistry-based energy. Meanwhile, the energy of uranium is a much bigger amount of energy which comes from the interaction of particles in the atomic nucleus.