Question

1. what is the variable that is changed by the experimenter called?

independent variable
control variable
hypothesis
dependent variable

Explanation:

• An independent variable is the variable that the experimenter deliberately changes or manipulates in an experiment to observe its effect on other variables.
• A control variable is kept constant to prevent it from influencing the results.
• A hypothesis is a proposed explanation or prediction, not a variable.
• A dependent variable is the one that is observed or measured and is affected by the independent variable.

Answer:

A. independent variable