Answer:
c. work done over a period of time
Explanation:
Power is defined as the ratio between the amount of work done and the time taken to do that work:
[tex]P=\frac{W}{t}[/tex]
where
W is the work done
t is the time elapsed
By looking at the equation, we see that the definition that corresponds to this formula is c:
c. work done over a period of time
