Most people feel that they are being confused by the information from broadcast news. This could be the effect of the information’s being delivered too quickly or of its being poorly organized. Analysis of the information content of a typical broadcast news story shows that news stories are far lower in information density than the maximum information density with which most people can cope at any one time. So the information in typical broadcast news stories is poorly organized.
Which one of the following is an assumption that the argument requires in order for its conclusion to be properly drawn?
(A) It is
not the number of broadcast news stories to which a person is exposed that
is the source of the feeling of confusion. - CORRECT. If not then number of broadcast new stories is the reason which then questions the conclusion.
(B)
Poor organization of information in a news story
makes it impossible to understand the information. - WRONG. Straightforward reworded content of the passage. Passage indeed says the same.
(C) Being exposed to
more broadcast news stories within a given day would help a
person to better understand the news. - WRONG. Like D and E, this is also similar in reasoning with that same aspect(more stories).
(D)
Most people can cope with a very high information density. - WRONG. Passage content rephrased.
(E)
Some people are being overwhelmed by too much information. - WRONG. Does not help validate the argument as 'some' can't be generalized. If 'some' is significant as in 'most'(although then it would go against the passage since most people can cope with high density, nonetheless the density is debatable here) then too it does not lets us believe or infer that it was poor organization of the stories that lead to confusion.
wickedvikramTo negate an option your SC skill will be helpful.
In B, "Poor organization of information in a news story" is the noun and "makes" is verb and the latter part is the result of that verb(not going into details of grammar but hope you got the point). So, negation of option is negation of the verb/action of the noun in that option.
HTHs
Answer A.