Which unit do we use to measure Power?

Power is the work done in a unit of time. In other words, power is a measure of how quickly work can be done. The SI unit for power is the watt. The watt (W) is the SI derived unit for power. It comes from the SI base units. Power is the measure of how much energy or work is used per unit time.

idk i’m struggling too

the answer is b because, investigating whether another species of moth also drinks tears might be interesting, but it would not directly explain why this species of moth does.

to explain why this species of moth drinks tears, the scientist could ask: "what nutrients that moths need are in elephant tears? "

the scientist could experiment with moth repellent or oter ways to keep the moths away, but that would not answer his original question.