Which of the following are advantages of personal interviews for research data?
(A) Personal appearance does not influence the respondent.
(B) Training the field staff is inexpensive.
(C) The method is flexible.
(D) It permits greater depth.
(E) The identity of the respondent can be controlled.
Choose the correct answer from the options given below:

Correct option is C

The correct answer is (c) because the advantages of personal interviews in research data collection include the following:
· (B) Training the field staff is inexpensive: Personal interviews typically require basic training for interviewers, which keeps costs relatively low.
· (D) It permits greater depth: Personal interviews allow interviewers to delve deeper into topics by asking follow-up questions and exploring complex responses, which provides richer data.
· (E) The identity of the respondent can be controlled: In personal interviews, the interviewer can verify the respondent’s identity, ensuring that the data is collected from the intended individual, which adds to the reliability of the data.