A Pediatrician's Office Noticed That Fewer Parents Are Bringing Their

A pediatrician's office noticed that fewer parents are bringing their children in for their vaccinations and routine checkups.The office sent out a questionnaire to parents whose children are behind in their shots.The questionnaire included the question "Why are you reluctant to have your child vaccinated?" This would be an example of a(n) :

A) dichotomous response
B) sampling frame question
C) scaled-response question
D) closed-ended question
E) open-ended question