What does a good measurement plan specify?

A good measurement plan is essential for collecting reliable data and ensuring that evaluation efforts are systematic and effective. The correct choice emphasizes the comprehensive elements involved in obtaining information, which includes specifying how data will be collected and where that collection will take place.

This thorough specification is vital because it allows for the identification of appropriate methodologies and settings that match the goals of the measurement plan. By clearly detailing how to obtain information—such as through surveys, interviews, or observational methods—and where to collect it—such as specific locations or populations—the plan ensures that the data collected is relevant and valid.

Other options lack the depth required for a good measurement plan. Merely specifying who will provide information does not address the actual methods or locations needed, nor does it ensure data quality. Similarly, focusing solely on how to revise strategies based on assumptions ignores the fundamental aspect of data collection itself. Finally, outlining only the types of instruments used does not encompass the necessary context of how these instruments will be implemented or the logistical arrangements for data collection. Thus, a comprehensive approach as stated in the correct choice is paramount for achieving effective measurement outcomes.