Answer:D. The body paragraphs flesh out the argument and include counterclaims and evidence from research.
Explanation:
The correct answer is operational definition
Operational Definition is a procedure that assigns a meaning communicable to a concept by specifying how the concept is applied within specific set of circumstances. In another way, an operational definition is an accurate description of what something is and how to obtain a value for this is something we are trying to measure, that is, how to measure it. An operational definition has to be specific, concrete, measurable and useful for the people involved.
