Your Facility Conducted a Study of Patient Satisfaction, but You

Your facility conducted a study of patient satisfaction, but you question the reliability of the questionnaire you used. The high degree of patient satisfaction expressed on the questionnaire just doesn't match the large number of complaints you have been receiving. You decide to try switching to an investigative strategy that will give you an immediate opportunity to review patient responses and correct errors. You have decided to use

A) samples.
B) interviews.
C) observations.
D) questionnaires.