For some reason I had a really hard time with this passage in general. It was surprising because I actually found it particularly interesting which is normally half the battle. I found Q16 particularly difficult. I wound up with the correct answer, but I spent way too much time trying to get there and in the end I think I just got lucky, which for the purpose of preparation I like to consider wrong anyway.
So here goes my two cents at this question
I was able to eliminate (D) and (E) quickly.
(D) Obviously this is pretty far out of scope, we have no idea the motivations behind the specialists, definitely not to the level of passionate craving
(E)Again, significantly out of scope.
It was really hard to get rid of both (A) & (C) here is my best guess
(A)I originally thought this was tempting, the author did mention the communication specialists assertion was too abstract (line 10) and lacked conclusiveness. However, the author was looking for a research model that is not in fact abstract. Rather, includes variability for individuals and cultures. Thus, I feel like this would be a bad logical continuation of the last paragraph.
Also something about "the degree to which cultural relationships" kind of set off an alarm for me. It didn't seem the author was trying to prove the assertion to a specific degree.
(C) I feel like this would be the overwhelming sucker choice and I think requires a good understanding of the whole passage, especially the purpose of the second paragraph (even more so if you missed Q17). In a more abstract sense, I think we can get rid of C because the problem with the communication specialists assertion was not so much the model, but lack there of. Line 15, "the assertion lacks empirical foundation and in some cases goes against fact.", Line 10, "based on little or no research into the place held by imported programs...". So from the information in the passage, there assertion has not described accurately the impact of external cultural influences. This is also reciprocated by the anthropologists findings in the second paragraph.
(B) on the other hand, gives us what we want to see. It is saying, that until communications specialists can approve otherwise, their assertions (which seemed to go against the evidence mentioned above) will not survive the criticisms.
Apologies for the lengthy descriptions, hope this helps and please correct me if I went wrong anywhere.