When it is desirable for the interviewer to be flexible in asking probing follow-up questions for marketing research, data would be best collected using
A) mail surveys.
B) mechanical observations.
C) paper diaries.
D) individual interviews.
E) online surveys.

Question

Quizplus · Accepted Answer

Individual interviews allow for flexibility in asking probing follow-up questions, as the interviewer can adapt questions based on the respondent's answers.

When It Is Desirable for the Interviewer to Be Flexible