An operational definition includes a description of the target behavior and its:

An operational definition is essential in behavior analysis as it provides a clear and measurable description of a target behavior. The correct explanation for this choice lies in the fact that topography refers to the physical form or appearance of the behavior. By specifying the topography, practitioners can ensure consistency in how the behavior is identified and measured, which is crucial for data collection and analysis.

When defining a target behavior based on its topography, it allows for objective observation and minimizes subjectivity. For example, if the target behavior is "raising a hand," the definition would include specifics about how the action looks, such as the position of the arm and hand, rather than leaving it open to interpretation. This clarity helps ensure that different observers will recognize the same behavior in the same way, facilitating reliable data collection and effective intervention planning.