D. Usually has an opinion about obstacles
Have you ever wondered what you should write about for a writing assignment and asked your writing/English teacher for advice on what you should write about? If you have, your teacher probably responded to your question with another question: “Well, what interests you?” If you asked why that mattered, the response would most likely have been “…because you should write about what interests you.” This is so because when one writes about a topic he or she is interested in, he or she will have the most to say about that topic because one will hold points of view/opinions on the matter. As such it is safe to say that an author who writes about obstacles usually has an opinion about obstacles.