Which results in an increase in power? A. Doing more work in less time. B. Doing less work in more time. C. Doing less work in less time. D. Doing more work in more time.

The correct answer is A. Doing more work in less time.

Power is the rate at which work is done. It is calculated by dividing the work done by the time it takes to do the work. Therefore, doing more work in less time will result in an increase in power.

Option B is incorrect because doing less work in more time will result in a decrease in power.

Option C is incorrect because doing less work in less time will not result in any change in power.

Option D is incorrect because doing more work in more time will result in an increase in power, but the increase will be less than if the same amount of work were done in less time.