Oxpeckers and rhinos manifest a symbiotic relationship in the wild. The oxpeckers $\underbrace{\text{warn the rhinos about approaching poachers}}_{\text{rhinos may be saved from the poachers}}$, thus possibly saving the lives of the rhinos. $\underbrace{\text{Oxpeckers also feed on the parasitic ticks}}_{\text{Oxpeckers get a food source}}$ found on rhinos.
Correct option: C.