A Researcher Interested in Measuring Religiosity Decides to Ask Respondents

A researcher interested in measuring religiosity decides to ask respondents how often they pray and how often they listen to religious programs on the radio. These questions represent the researcher's attempt to

A) provide a conceptual definition of the concept.
B) refine the meaning of the concept.
C) specify empirical indicators.
D) assess the quality of the researcher's operational definition.