Why are mail surveys an unreliable means of gathering primary data in many foreign countries?
A) opinionated nature of target samples
B) reticence of people in presence of others
C) low literacy rates
D) lack of basic telecommunications infrastructure

Question

Quizplus · Accepted Answer

Mail surveys can be unreliable in many foreign countries due to low literacy rates, which can prevent a significant portion of the population from being able to read and respond to the survey.

Why Are Mail Surveys an Unreliable Means of Gathering Primary