What rule is the following questionnaire item against? Which kind of products did you mainly purchase (Select all that apply)? □ Clothes □ Shoes □ Books □ Electronics □ Cosmetics
A.
Making the alternatives exhaustive
B.
Including filter questions
C.
Making the alternatives mutually exclusive
D.
Including a non-forced-choice of “no opinion”
E.
Avoiding double-barreled questions
F.
Avoiding leading questions
G.
Avoiding ambiguous items