Dividing the article into sections help the author develop the article idea BY UNIFYING EACH PART AND FOCUSING ATTENTION ON ONE TOPIC AT A TIME. Dividing the article into sections will help the author to treat one topic at a time and to concentrate fully on that topic. Smooth transition from one topic to another throughout the book will gives the book a unifying touch.
The answer to your question, How does dividing the article into sections help the author develop the article's ideas?, would be It unifies each part and focuses attention on one topic at a time. This will help the author organize his or her ideas and the readers to understand the article.
I think the answer is B because their word choice made me feel sympathy for Mundra and what she went through for her to ache all over and even her heart.
The answer should be C. Third person omniscient. A narrator in this point of view, narrates the story. The narrator is aware of everything going on, and all the character's feelings. Hope this helps!:)