Question

during an experiment, if you purposely change the temperature to test a hypothesis, the temperature is called the

• dependent variable
• operational variable
• independent variable
• responding variable

Explanation:

In an experiment, the independent variable is the one that the experimenter purposely changes to observe its effect on another variable. Here, temperature is being purposely changed to test a hypothesis, so it's the independent variable. Dependent/responding variables are what's measured (depend on the independent variable), and operational variable refers to how a variable is defined/measured, not the manipulated one.

Answer:

C. Independent variable