Question

the pearl fish using the sea cucumber to hide is an example of a
commensalism
parasitism
mutualism
metabolism

Explanation:

Commensalism is a symbiotic relationship where one organism benefits and the other is neither helped nor harmed. The pearl - fish using the sea cucumber for hiding benefits from the shelter, while the sea cucumber is not affected. Parasitism involves one organism (parasite) harming the other (host). Mutualism is when both organisms benefit. Metabolism is the set of life - sustaining chemical reactions in organisms. This is an example of commensalism.

Answer:

A. Commensalism