Answer:
D ) time
Step-by-step explanation:
- Horsepower (hp) is a unit of measurement of power, in the foot-pound-second ( fps ) or English system which is used to express the rate at which mechanical energy is expended
- This also can be used as the rate at which work is done.
- horsepower is rarely used to express power in any form other than mechanical.
- power is the rate of workdone

- Power is mainly measured in Watts (W) which is the SI unit of it
- To convert from horsepower to kilowatts
1 hp = 0.746 kW