In What Way Does the Qualitative Interview Differ from a Friendly

In what way does the qualitative interview differ from a friendly conversation?

A) The friendly conversation has an explicit goal or purpose,whereas the qualitative interview often does not have a specific goal in mind.
B) The friendly conversation contains many instances of repetition,whereas the qualitative interview tends to avoid going over the same details more than once.
C) In a friendly conversation the participants usually avoid abbreviations and jargon,but in a qualitative interview the interviewer tries to use the same jargon and expressions familiar to the participant.
D) In a friendly conversation the participants tend to speak out of turn and cut each other off,whereas in a qualitative interview the interviewer will often interrupt the participant’s response in order to ask for clarification.
E) During a friendly conversation a pause or brief silence is acceptable,whereas in a qualitative interview pauses can be used by the interviewer to get the interviewee to elaborate on a previous point.