Although very costly to use on a significant scale,which method of data collection provides the best quality of information?
A) internet surveys
B) personal interviews
C) telephone interviews
D) questionnaires

Question

Quizplus · Accepted Answer

Personal interviews have been shown to provide the best quality of information because they allow for in-depth probing, clarification, and observation of body language and other nonverbal cues. However, they are typically more expensive and time-consuming to conduct than other methods.

Although Very Costly to Use on a Significant Scale,which Method