Discover a world of knowledge at Westonci.ca, where experts and enthusiasts come together to answer your questions. Get immediate and reliable solutions to your questions from a community of experienced experts on our Q&A platform. Get quick and reliable solutions to your questions from a community of experienced experts on our platform.

Which statement about control Ed experiments is correct?

A. Controlled experiments test more than one variable at a time.

B. Controlled experiments do not contain and experimental group.

C. Controlled Experiments are rarely used anymore

D. Controlled Experiments test only one variable