What is the only research method that can establish a cause-and-effect relationship?
A) a case study
B) a survey
C) an experiment
D) scientific observation

Question

Quizplus · Accepted Answer

Only an experiment can establish a cause-and-effect relationship, as it involves manipulating variables to see the effect on other variables. Case studies, surveys, and scientific observation can provide valuable information, but they cannot definitively establish causality.

What Is the Only Research Method That Can Establish a Cause-And-Effect