Which of the Following Methods Is the Most Efficient Method

Multiple Choice

Which of the following methods is the most efficient method to reduce the negative effects of the etiquette barrier of communication?

A) Showing a generally accepted and sympathetic attitude toward respondents
B) Telling respondents that information will be handled confidentially
C) Selecting an appropriate interviewer and a proper setting for the interview
D) Convincing respondents that the interview is a good use of their time.