What type of relationship most likely exists between the birds and the elephant?
a) mutualism
b) parasitism
c) predation
d) reproductive

Mutualism because the bird gets a meal and the elephant is cleaned of bugs and ticks. Parasitism would be worms or parasites were only the parasite benefits and the animal is harmed. Predation would be if the elephant was eating the bird, which wouldn't happen. Reproductive would be two elephants, a male and a female.