Letter B is the correct answer.
Grounded Theory is a systemic methodology developed in the 60s by the sociologists Anselm Strauss and Barney Glaser. The Grounded theory focuses on the way in which people make sense and solve problems that arise within social contexts. The main purpose of this theory is to shorten the gap between theory and empirical research, help to legitimize careful qualitative research and suggest the logic of grounded theories.