Question

multiple choice 1 point which statement about the use of independent variables in controlled experiments is correct? a different independent variable must be used each time an experiment is repeated. only one independent variable is used for each experiment. the independent variable must involve time. the independent variable states the problem being tested.

Explanation:

The independent variable is the factor that is manipulated or changed in a controlled experiment to test its effect on the dependent variable. It doesn't have to involve time, and multiple independent variables can be used in an experiment. Each experiment can have its own independent variable(s). The independent variable represents what is being tested in the experiment.

Answer:

The independent variable states the problem being tested.