B) The Topic sentence does not fit with the supporting sentences that follow it.
The topic sentence talks about how the consumption of chocolate is being sanctioned by the medical community while the supporting sentences are describing the taste of chocolate. These two do not relate to each other, therefore B would be only logical answer in the above problem.
The topic sentence has nothing to do with the two sentences that follow. The first sentence is about medical acceptance. The next two are about chocolat's properties.
Your best answer is B. But it would be much better if was presented the other way around. Sentences 2 and 3 are not supporting sentence 1.
