After Designing a Questionnaire,the Surest Protection Against Such Mistakes as Ambiguous

Multiple Choice

After designing a questionnaire,the surest protection against such mistakes as ambiguous questions is to

A) pretest the questionnaire with people who at least somewhat resemble your eventual sample.
B) let it set for a few weeks so that the errors become more apparent.
C) put it through the computer and do a factor analysis.
D) run it through a grammar-checking computer program.
E) proofread your questionnaire