The answer is C) because it was quoted in the article. When a writer uses another article for their work they cite (put in quotations) the title of the article and anything they used from it or it will be plagiarizing
I would think the answer would be letter B
From my my experience this usually differs depending on the type of book it is, but I think the best choice is either A, to help the reader understand new concepts, or C., It allows the reader to focus on key ideas and information during the reading. I'd pick C though, since it's more in depth and makes more sense.
B. doesn't make that much sense unless the book is an argumentative or a persuasive book.
D. only applies to personal narratives. Nobody can understand a writer's personal experiences and attitudes otherwise.
Answer:
1-Skiing is a popular sport despite its disadvantages.
