A manufacturer of food products is looking at entering several new markets in developing countries. Before it does this, the company wants to collect data on item and flavor preferences in these markets. It sends out a survey that has been accurately translated into the local language, but it still receives inconsistent results. In talking with a consulting firm, the manufacturer is informed that several of these countries have extremely high illiteracy rates and the survey answers may be only random guesses by the respondents. Which of the following problems associated with collecting primary data in global markets does this scenario exemplify?
A) unwillingness to respond
B) limited access
C) unreliable sampling procedures
D) inadequate demographic information
E) insufficient comprehension

In simple words, the problem depicted in the given scenario is an example of low knowledge of the target audience. In the given case, the company did everything correct with respect to their procedures, like they made a question are in the local language and distributed to the target audience and collected the survey efficiently.

However while doing the procedure, they were unaware of the fact that their target audience was not literate enough. Hence we can conclude that the correct answer is D.