Question

1. in an experiment, the variable that is changed on purpose is called the: a. dependent variable b. control variable c. independent variable d. constant

Explanation:

In an experiment, the independent variable is the one manipulated or changed on purpose to observe its effect on the dependent variable. The dependent variable is what is measured and affected by the independent variable. Control variables are kept constant to ensure only the independent - variable's change affects the outcome, and constants are unchanging values in the experiment.

Answer:

C. Independent variable