A pride of lions attack an elephant, providing food for the members of the pride. Is this an example of commensalism, mutualism, parasitism, or predation

This is an example of predation. Predation is a relationship in which one organism (the predator) kills and consumes another organism (the prey) for its own survival and nutrition. In this case, the lions are the predators attacking and feeding on the elephant, which makes it a predation relationship.