In Questionnaires, Screening Questions Are Used To

In questionnaires, screening questions are used to:

A) prevent unqualified respondents from being included in the study.
B) provide the respondents with an overview of the research.
C) arrange the sequence of questions from general to more specific based on research objectives.
D) identify difficult and sensitive questions and place them toward the end of each section.
E) eliminate or at least minimize response order bias.