which best describes the purpose of a controlled experiment?\n to make sure the results of the experiment…

which best describes the purpose of a controlled experiment?\n to make sure the results of the experiment support the hypothesis\n to prevent a dangerous condition resulting from a reaction\n to examine whether one variable causes a change in another\n to prevent an undesired change in a variable
Answer
Brief Explanations:
In a controlled experiment, one variable is manipulated to see its effect on another. This helps determine cause - and - effect relationships.
Answer:
to examine whether one variable causes a change in another