Question $4$

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Collecting data using a questionnaire helps to reduce time and cost, and the response obtained will reflect the valid opinion of the responden Which of the following is NOT the advantage of using a questionnaire?

a$.$ The cost is much cheaper than face$-$to$-$face interview

b$.$ Respondents are more willing to be truthful in their opinion

c$.$ Data collected is more accurate

d$.$ Able to cover a broad geographical area

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