Question

read the passage. then answer the question.
cleaner wrasse are small fish that live in tropical coral reefs. wrasse are often visited by larger fish, such as moray eels. when an eel visits a wrasse, the wrasse cleans the eel by eating parasites attached to the eels body. if the parasites are not removed, the eel may become weak or even die.
before the wrasse begins to clean, the eel opens its mouth to signal to the wrasse that it is ready to be cleaned. then the wrasse eats all the parasites it can find on the eels body, including those inside the eels mouth!
which type of relationship is formed when a cleaner wrasse eats parasites off a moray eel?
commensal mutualistic parasitic

Explanation:

Mutualistic relationship means both species benefit. Here, the wrasse gets food (parasites) and the eel gets cleaned (parasites removed which could harm it). Commensal means one benefits and the other is unaffected. Parasitic means one benefits at the expense of the other. Since both benefit (wrasse - food, eel - health), it's mutualistic.

Answer:

mutualistic