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A(n) ________ is a description of how the researchers will measure the variables of interest.

A. experimental plan
B. hypothesis
C. operational definition
D. theory

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Final answer:

The correct answer is C. Operational definition. An operational definition is a description of how researchers will measure the variables of interest in a study.

Step-by-step explanation:

The correct answer to this question is C. Operational definition.

An operational definition is a description of how researchers will measure the variables of interest in a study. It defines the concept in terms of concrete steps or observable conditions that can be objectively measured. By operationalizing the variables, researchers can collect data in a systematic and replicable manner.

For example, in a study examining the effects of tutoring on grades, one researcher might define a "good" grade as a C or better, while another researcher might begin with a B+. These operational definitions set limits and establish cut-off points to ensure consistency and replicability in the study.

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