At Westonci.ca, we make it easy for you to get the answers you need from a community of knowledgeable individuals. Get quick and reliable answers to your questions from a dedicated community of professionals on our platform. Get detailed and accurate answers to your questions from a dedicated community of experts on our Q&A platform.

Which one of the following represents a critical difference between the non-experimental and experimental methods?
O Experimental methods involve the manipulation of variables while nonexperimental methods do not.
O Nonexperimental methods involve operational definitions while experimental methods do not.
O Nonexperimental methods involve the manipulation of variables while experimental methods do not.
O Experimental methods involve operational definitions while nonexperimental methods do not