The answer is B. Let me show you why.
Premise 1: In a recent survey, people were given a list of civil conflicts throughout the world and asked to name those conflicts in which they thought international power might reasonably be used to effect a solution.
Premise 2: It was found that individuals were consistently optimistic or pessimistic in their attitude toward the usefulness of international power, and that there was almost no difference in individual attitude according to whether or not the areas in question were under democratic governments.
Conclusion: It is clear that the people surveyed do not consider a country's form of government relevant in deciding whether its internal conflicts should be solved by international power.
Understanding: People who were surveyed were asked about international powers could affect (positively and negatively) conflicts in other countries and how they felt about it. They gave very strong opinions and so in either case the author says that these people don't care about democratic governments. He then draws a conclusion saying that these people do not care about the form of government. What if they didn't know enough about the country and just had to answer based on limited data/knowledge? It doesn't mean they don't care.
Which of the following, if true, would most seriously weaken the conclusion above?
A) Democracies are no more likely than other states to favor international interference on their domestic affairs..
Incorrect. Out of scope. Not about people who were surveyed and how they felt about international interference on domestic affairsB) Many of the conflicts described took part in countries that are rarely subject to in-depth news coverage, and most respondents did not know the for of government in those countries...
CorrectC) The survey respondents tended to be from a homogeneous social background and were therefore not representative of the nation as a whole...
Incorrect. Out of scope. Only talking about people surveyed not the nation as a whole.D) There was considerable variation in the intensity of civil conflicts that were included on the survey list...
Incorrect. Variation is not at issue here. Caring about form of government is the main focus. E) Most of the survey respondents had no more than an average knowledge of foreign affairs and could not be expected to make informed decisions on the feasibility of using international force in conflicts described...Incorrect.
Shell Game answer. Focus is not on feasibility of international force but on people caring about form of government