Which of the Following Social Roles Might Cause a Researcher

Which of the following social roles might cause a researcher to be biased in his or her observations?

A) The role of being a white, middle class, American male studying the role of women in Christianity
B) An atheist researcher studying the effects of Christianity on American society
C) An active church member studying symbols of the Christian church.
D) A female researcher studying male Muslims.
E) Any social role can create bias on the part of the researcher; it is the responsibility of all researchers to remain as unbiased as possible when conducting research.