Which statement about confounding variables in experiments is FALSE?

Question

Quizplus · Accepted Answer

Not every experiment has a confounding variable, although many do. Confounding variables are extraneous factors that might influence the outcome being measured, but are not the independent variable being tested. It is important to avoid or minimize confounding variables, as they can lead to incorrect conclusions. Random assignment can help control for confounding variables, but it is not a guarantee, and other techniques may also be necessary.

Which Statement About Confounding Variables in Experiments Is FALSE