When a Researcher Is a Complete Observer, He or She

When a researcher is a complete observer, he or she:

A) Spends a limited amount of time observing group members who know he or she is observing
B) Is a participant in the setting more than an observer
C) Observes as an outsider without letting others know he or she is doing research
D) Participates in a setting without letting people know he or she is a researcher