Which of the following methods is most for clarifying cause-effect relationships?

The methods that is most helpful for clarifying cause-effect relationships would be : The experiment
By doing an experiment, we could create a controlled factor to determine whether the cause-effect relationship is exist or not.

This question is an opinionated one, and we don’t know anything about the module or anything, thus we can not answer it. but if you are having trouble on what it is asking basically it is just asking to (using your knowledge on the topic) say which topics you were most interested and which were the most challenging.hope this : p