What type of evaluation determines if an intervention was implemented as planned?

The correct choice pertains to process evaluation, which focuses specifically on how an intervention is delivered and whether it adheres to the original plan. This type of evaluation assesses the fidelity of the implementation by monitoring various components such as the activities carried out, the resources used, participant engagement, and the overall execution of the program.

By examining these aspects, process evaluation helps to identify any discrepancies between the planned intervention and its actual implementation. For public health practitioners, this is crucial as it provides insight into the operational aspects of the intervention, which can inform future adjustments to improve effectiveness.

In contrast, impact evaluation measures the immediate effects of the intervention on the target population, while outcome evaluation assesses the long-term effects, usually focusing on changes in health status or behavior. Summative evaluation looks at the overall effectiveness of a program at its conclusion but does not specifically analyze the implementation process itself.