What research method is being used if a researcher manipulates a variable under carefully controlled conditions and observes whether any changes occur in a second variable

Question

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The experimental method involves manipulating a variable (independent variable) under controlled conditions and observing whether any changes occur in a second variable (dependent variable). This allows the researcher to establish cause-and-effect relationships and determine the effect of the manipulated variable on the observed outcome.

What Research Method Is Being Used If a Researcher Manipulates