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Consider the following passage:
Energy exists in many forms around us. The development of modern civilization has been accomplished because scientists and engineers had learned the mechanism of converting one form of energy into another to do useful work. The transformation of energy from coal into steam and then into mechanical energy in engines that do heavy work enabled the Industrial Revolution. There are different forms of energy around us, such as mechanical energy (potential energy and kinetic energy), chemical energy, electrical energy, radiant energy, nuclear energy, and thermal energy. All of these forms of energy are related and can be transformed or changed into the other forms to do useful work.
Hydroelectric dams make use of the differences in water levels to generate electricity. Which of the following shows the energy conversion in a dam?

Explanation

In hydroelectric dams, water from an elevation (possessing gravitational potential energy) is made to fall from a height (kinetic energy), generating electrical energy. A is correct.

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