Answer:
I think it is b. The speaker is not convicted about this unconventional manner of speaking, and he sees no reason to continue with speaking this way.
Explanation:
hope this helped :)
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.