jenny, you're thinking in terms of of the "content" of the responses, i.e., which one is true or accurate.
But this isn't that kind of test. This test measures the "style" of the response, i.e., whether the testtaker can distinguish between specific and vague information.
There is no fire and no corner. The correct answer is the one described with the greatest specificity.
(The SAT and GRE are famous for their analogies. As I said above, when I was applying to grad school, I was thrown by the analogies because each question seemed to have several correct answers. But I quickly realized that they preferred some aspects of analogies (identical functions, say) while considering others (same size and shape ) "wrong". It's just the way tests work.)