Question

the effect that you are looking at in an experiment is called the dependent variable. in the walrus example, the dependent variable is the weight of the walruses. notice that the weight of the walruses depends on whether or not you feed them fish food. that is why it is called the dependent variable. what is the dependent variable in the above experiment? the weight of the walruses. the age of the walruses in the experiment. whether or not you feed your walruses fish food. the color of the eyes of the walruses.

Explanation:

The text clearly states that in the walrus experiment, the weight of the walruses depends on whether or not they are fed fish - food, which defines it as the dependent variable.

Answer:

The weight of the walruses.