सूची I को सूची II से सुमेलित कीजिए और नीचे दिए गए कूट का उपयोग करके सही उत्तर चुनिए: सूची I a. ज्ञानमीमांसा (Epistemology) b. प्रतिमान (Paradigm) c. सत्तामीमांसा (Ontology) d. परिघटनाशास्त्र (Phenomenology) सूची II i. अस्तित्व / वास्तविकता का अध्ययन ii. व्यक्तिपरक अनुभव का अध्ययन iii. ज्ञान प्राप्ति का अध्ययन iv. विचारों का एक मानक या समुच्चय

Given below are two statements: Statement I: An operational definition translates a vague construct into measurable and observable terms for the purpose of a specific research study. Statement II: A moderator variable is a type of extraneous variable that the researcher fails to control, thereby providing an alternative explanation for the results. In the light of the above statements, choose the correct answer from the options given below:

The variable manipulated by the experimenter in an experiment is called the ________ variable.