Answer:
operation definition
Step-by-step explanation:
An operational definition is a carefully worded statement of the exact procedures used in a research study. It describes how a variable or concept is operationalized and measured in the study. An operational definition provides clear and specific instructions for how the variable or concept will be operationalized and measured so that other researchers can replicate the study. The other options you provided are important elements of a research study, but they do not provide specific information on the procedures used to operationalize and measure a variable or concept.