I think the it is B hope that helps
Answer:
0 degrees 90 degrees 180 degrees 360 degrees
Because he wanted to investigate an unfamiliar issue in an unfamiliar place, which would take time.
Participant observation is one kind of information gathering technique regularly utilized in qualitative research. This is a procedure of field research utilized in human sciences and sociology, by which a researcher examines the life of a gathering by partaking in its exercises.