Final answer:
In the given example, the females of a small primate species choose a large male to protect the family group from predators. This is an example of intersexual selection.
Step-by-step explanation:
The result of intersexual selection in the given example is that the females of the small primate species choose a large male because only the biggest males are able to protect the family group from predators. This is an example of intersexual selection, a type of sexual selection in which individuals of one sex choose mates of the other sex.