The batteries of some flashlights can be charged by turning a handle. Which energy transformation is happening in this process?

a. Kinetic to electrical to chemical.
b. Kinetic to potential to chemical.
c. Kinetic to potential to light.
d. Kinetic to electrical to light.

The correct answer is d. Kinetic to electrical to light.

In this process, mechanical (kinetic) energy is being converted into electrical energy as the handle is turned. This electrical energy is then used to power the light bulb, which produces light energy.