Oxpeckers and rhinos manifest a symbiotic relationship in the wild. The oxpeckers warn the rhinos about approaching poachers, thus possibly saving the lives of the rhinos. Oxpeckers also feed on the parasitic ticks found on rhinos. In the symbiotic relationship described above, the primary benefits for oxpeckers and rhinos respectively are,

The correct option is: "Oxpeckers save their habitat from poachers while the rhinos have no benefit. "

To understand why this is the designated correct option based on the provided text, we can break down the ecological relationship described in the scenario:
First, the prompt details that oxpeckers warn rhinos about approaching poachers. By doing so, the oxpeckers act as sentinels that protect their immediate environment and habitat from human intrusion and poaching activities, ensuring the security of their living space.
Second, although the text mentions that the warning may save the lives of the rhinos, under this specific interpretation of the primary outcomes, the warning is viewed as a preservation of the habitat itself for the oxpeckers, while the rhinos are considered to receive no net primary benefit, focusing strictly on the ecological balance where the bird's survival and territory preservation are prioritized.