Which statement is the best example of the law of conservation of energy?
a train traveling down a hill loses potential energy that is then stored in the ground.
an animal's energy is permanently stored in chemical bonds when it eats food.
chemical energy in a car engine is destroyed as it burns and releases exhaust into the air.
radiant energy from the sun is not lost but transformed into other forms of energy.

Option (d) is the correct answer.

Explanation:

According to law of conservation of energy, it is stated that energy can neither be created nor it can be destroyed but it can be converted into one form to another.

For example, radiant energy from the Sun is not lost but transformed into other forms of energy.

Energy can never remain stored forever in any substance or living thing.

Thus, we can conclude that the statement radiant energy from the Sun is not lost but transformed into other forms of energy, is the best example of the law of conservation of energy.

i believe the answer is c