An experiment uses <u>variables</u> to test <u>causation</u>.
<h3>What is an experiment?</h3>
An experiment is a test conducted by a researcher to provide evidence of the existence of some theories. It is also used to establish scientific knowledge. With the evidence provided during experiments, theories can be relied upon for further studies.
<h3>What is a variable?</h3>
A variable is a unit that changes under specified conditions.
Thus, experiments use <u>variables</u> to test <u>causation</u>.
Learn more about experiments, variables, and causation here: brainly.com/question/12915879
