Answer the following question given this paragraph: 

Some mammals are omnivores. Omnivores are heterotrophs that eat a mix of plant and animal foods. Mammals that are omnivores include bears, foxes, rats, pigs, and human beings. The chimpanzees in Figure below are also omnivorous mammals. In the wild, they eat mainly plant foods, but they supplement plants with birds, bird eggs, insects, small monkeys, and other small mammals. Their favorite and most common food, however, is fruit. Animals that eat mainly fruit are called frugivores.


Q: What is the name for a kind of animal that eats a mix of plant and animal foods.

 Choices:

- an smorgasbord

- a carnivore

- an herbivore

- an omnivore

A:
an omnivore
