The answer is B, hope it helps
The author of the text that contains this quote appeals to the reader's sense of logic by quoting an authority/expert on the matter. Taking into consideration that expert's opinions, in argument, are as close to a fact as you can get without actually using a fact, this shows us how your best answer here is option B.
The main purpose of expository text is to inform or describe what the story or book is about, so when the student reads they are understanding what is being read better. They can use this technique forever when reading and comprehening.
Claim A needs to be narrowed, it doesn't really elaborate like the other ones
