The sentence that best represents the function of a supporting sentence is, option B. It adds more details to the topic sentence. The supporting sentences make up the paragraph that talks about the main sentence. The supporting sentences not only add more information about the topic, but also add examples to further explain the main sentence.
Answer:
I think the answer is Water...
The correct answer is C.
The comic tone of the play is solely given by the characters' calm reaction to the the huge fire that is surely to burn down the whole hotel.
If the characters were to react like normal people would -screaming and panicking- the play would lose its whole essense.