Mail-in surveys are not considered entirely reliable because
A) only some people from the sample population send in the survey.
B) people may not understand the questions.
C) people may not answer truthfully.
D) All of the above.

Question

Quizplus · Accepted Answer

All of the options listed are valid reasons why mail-in surveys may not be considered entirely reliable. They can suffer from low response rates, misunderstandings of the questions, and dishonest answers.

Mail-In Surveys Are Not Considered Entirely Reliable Because