Cleaner shrimp feed on parasites in the mouths of eels. If an eel does not find a cleaner shrimp often enough, its parasite load becomes so high that it cannot reproduce. If all the cleaner shrimp die due to a disease, what will happen to the population of eels?
a. Since they need to be cleaned to survive, a mutation will arise that allows the eels to get rid of parasites some other way.
b. Populations always have enough genetic variation to allow them to adapt to any environmental challenge.
c. Without any cleaner shrimp, the eel population will go extinct (die out).
d. Because they need to get rid of parasites, some individual eels will adapt to be cleaned by other species.