Final answer:
The relationship between remoras and sharks is an example of commensalism.
Step-by-step explanation:
The relationship between remoras and sharks is an example of commensalism.
In commensalism, one species benefits while the other species is unaffected. In this case, the remoras attach themselves to the shark's body and travel with the shark. They feed on the leftover food scraps from the shark's meal, but the shark is not harmed or affected by the remoras' presence.
Therefore, the correct answer is c) Commensalism.