Match the type of research with the appropriate descriptor. Prompt 1A study conducted using data that has already been collected about events that have already happened Answer for prompt 1 A study conducted using data that has already been collected about events that have already happened Prompt 2A study planned by the researcher for collection of primary data for specific research Answer for prompt 2 A study planned by the researcher for collection of primary data for specific research Prompt 3A study looking at a single phenomenon across multiple populations at a single point in time