Biology

The correct answer is: A.Competition

Here's why:

The two male giraffes are fighting over a resource—the last green leaf of a tree. Since they both want to access the same limited resource, they are in competition. In this case, the competition is over the food source, which can lead to a decrease in available resources for both animals.

Why the other options are not correct:

B.Mutualism: In mutualism, both organisms benefit from the interaction. Here, the giraffes are not benefiting each other; instead, they are competing for the same leaf.