Question

in general, which of the following is true regarding a dependent variable? it is controlled by the scientist running the experiment. not all experiments must have a dependent variable. it must be constant. it changes based on the independent variable.

Explanation:

In an experiment, the dependent variable is the outcome that is measured. Its value depends on the independent variable, which the experimenter manipulates. So it changes based on the independent variable.

Answer:

It changes based on the independent variable.