When a sociological researcher interviews workers about their opinions of their health insurance,the researcher is engaging in what stage of research?

A) reviewing the literature
B) selecting a research method
C) formulate a research question
D) collecting the data
E) analyzing the data

Collecting data is the stage in research where the researcher actually conducts the interviews or gathers information from participants. The other stages listed include reviewing the literature to understand what research has already been done on the topic, selecting a research method to gather data, formulating a research question to guide the study, and analyzing the data collected to draw conclusions.