Answer:
b. benefit ... harmed
Step-by-step explanation:
Predation is a relationship that occurs between two organisms dwelling in a biological community, in which one of the organisms (predator) obtains their food by killing and eating the other (prey).
This biological interaction is a winner-loser relationship where the prey is harmed, while the predator benefits. For example: lion and zebra relationship. The lion kills and eats the zebra. The lion benefits, while the zebra is harmed.