Marcus, an inmate at a state prison, is participating in a s…

Marcus, an inmate at a state prison, is participating in a study where the researcher plans on asking him a series of open-ended questions. The researchers want him to tell his story and share his experiences in the prison system. He was told that his participation would require at least a few sessions and that it might take a few days to complete. Markus is likely participating in which type of study?