Occurs when a researcher purposefully manipulates one or more variables in the hope of seeing how this manipulation affects other variables of interest.

Occurs when a researcher purposefully manipulates one or more variables in the hope of seeing how this manipulation affects other variables of interest.

Occurs when a researcher purposefully manipulates one or more variables in the hope of seeing how this manipulation affects other variables of interest. 





a. Hypothesis
b. Surveys
c. Research Analysis
d. Experiments










Answer: D