The motions of the toy robot shown above are driven by an electric motor. the power source for the toy's motor is a pair of batteries.

which of the following best summarizes the energy transformations taking place in the toy robot?

a. mechanical energy is transformed into light energy, and the light energy is transformed into electrical energy.

b. light energy is transformed into electrical energy, and the electrical energy is transformed into mechanical energy.

c. chemical energy is transformed into electrical energy, and the electrical energy is transformed into mechanical energy.

d. electrical energy is transformed into chemical energy, and the chemical energy is transformed into mechanical energy.