Question

Which one is the best explanation of energy?

Answer 1

The answer is B.  the ability to do work :)

Answer 2

The energy of a substance is defined as the capacity to do work.The energy may be possessed by the body in various forms.It may be kinetic,potential,magnetic.electric etc.

a- The energy can be transformed from one form to another form.It is called energy conversion.

c-The power defined as the consumption of energy per unit time.

              $Mathematically\ power\ P=\frac{E}t} =\frac{W}{t}$      

Here E is the energy and W is the work done,t is the time.

d-The S.I unit of energy is Joule[J].

    Hence the correct answer to the question is b. the ability to do work