The fit of a study's parameters with the guiding questions is referred to as what?

The correct choice refers to the alignment of a study's parameters with its guiding questions, which is crucial in ensuring that the research is coherent and focused. Design features encompass various elements that contribute to a study's framework and methodology, including how the research questions are constructed and how they are operationalized within the study. This includes the selection of appropriate measures, the established protocols, and the overall structure that guides the research process.

When design features are well-defined, they ensure that the outcome of the study will effectively address the guiding questions, thereby increasing the reliability and validity of the findings. This alignment helps researchers strategically plan their investigations, ensuring that all aspects of the study contribute to answering the core questions.