Solution:Concept: In this question, we need to discuss the capacity of a body to do work.
So, starting from the analyzing of options, Stamina is the physical capability of anybody to do any task. It is basically related to physical potential.
Second we have potential, it is an ability that is unrecognized and that a person or object can do.
Then we have velocity, it is basically the speed of a body in a particular direction. When a body has direction as well speed then it is called velocity.
After that we have energy. Energy is the capacity of anybody to do work or for the production of heat. The sum of potential energy and kinetic energy is called internal energy of the body.
So, the answer to this question is- energy is the capacity of a body to do work.
Hence, option 4 is correct.