Which statement best describes the law of conservation of energy?

a. Energy can be destroyed but not created.

b. We need to conserve our natural resources.

c. Energy cannot be created or destroyed.

d. The conservation of energy is unrelated to the conversion of energy.

C Energy cannot be created nor destroyed

The correct option is C. Energy cannot be created or destroyed. This statement is known as law of conservation of energy, and it implies that whenever a certain form of energy does change, the loss of this form of energy must have converted into an another type of energy. A typical example is an object falling to the ground: initially, the object has gravitational potential energy. As the object falls down, it loses potential energy (since its altitude from the grounf decreases), but it acquires kinetic energy (because its velocity increases). In this example, potential energy has converted into kinetic energy, but the total energy of the object has remained constant.