Which relationship is an example of commensalism? a) hyenas and lions fight over the same antelope kill. b) a tapeworm lives in the intestine of a dog, obtaining food for itself, while slowly harming the dog. c) remora fish stick to large sharks, receiving a free ride and scraps of food the shark does not eat. the shark is neither nor harmed. d) a diamondback rattlesnake and a gopher turtle share a burrow. the turtle digs the hole, and the snake provides protection from predators for the turtle.