Power can be defined as the rate at which work is accomplished.
Option D is the correct answer.
The work done by an object in a given time interval is called the power of that object.
Suppose an external force F is applied to any object for the time interval T seconds. Due to this external force, the object will perform some amount of work for the time T seconds. This work W done by the object for the time interval T seconds is called the power of that object.
Power can be defined in mathematical term which is given below.
[tex]P = \dfrac {W}{T} \;\rm Watts[/tex]
Thus the power can also be defined as the work done by the object per unit time interval.
Hence we can conclude that option D is the correct answer.
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https://brainly.com/question/1618040.