Which is an example of the way matter cycles through the bodies of living things?

A) A fish swims in the ocean.

B) The sun heats up a rock.

C) One animal eats another animal.

D) Trees convert sunlight to energy.

I would say that the example of the way matter cycles through the bodies of living things is D. trees convert sunlight to energy.

It is the best way to show how matter goes through the body of a living thing, such as trees.