The capacity to do work is called

We know energy is defined as the capacity to do work

So option (c) is correctly describing the given definition.

But option (a) $\text{Power}=\frac{\text{work\hspace{0.17em}done}}{\text{time\hspace{0.17em}}}$

Option (b) Force = mass × acceleration

Option (d) Momentum = mass × velocity are not relevant to the given definition.