Answer:
i think the author use rhetoric to appeal mostly to logic, characters, emotion
Looking is not considered searching
Answer: B, a sentence.
Since a chromosome contains tens of thousands of genes and is compared to a novel, it would only make sense for a gene to be less than a novel. We can eliminate C. D, chapter of the book is too generous.
A, on the other hand, contains is not generous enough.
Therefore, I think the answer should be B.