Which of the following is considered to be the most versatile of all the contact methods?
A) mail questionnaires
B) telephone interviews
C) personal interviews
D) online interviews
E) field trials
Answer: C
Which of the following is considered to be the most versatile of all the contact methods?
A) mail questionnaires
B) telephone interviews
C) personal interviews
D) online interviews
E) field trials
Answer: C