The correct answer to this question is: TRUE.
The section written in all caps is a <em>conclusion</em> of the previous explanation, therefore, <em>it expresses the main idea in the text</em>. A conclusion consists of a recapitulation of the introduction, which usually expresses the main idea in a text. The first sentence wrote, "When the sun and moon are near the horizon, we notice that they are distorted from a circular form into ovals, and are usually of a reddish color" tells the reader what is the main information or idea the writer is trying to convey. All that follows is an explanation of the reasons why that phenomenon happens. In the end, the section written in all caps resumes the introduction and adds a summary of the information given. Thus, this section can be considered an example of the main idea presented in the beginning.
The answer to eliminate is C: to inform the public about the health benefits about the benefits of eating fruits & vegetables. Eating plenty of fruits and vegetables has been associated with a reduced risk of developing many types of cancer. This point is no longer valid to a person that has already developed cancer, and must now receive chemotherapy as treatment. The more useful points would be to explain the role of an oncologist and to have a young survivor speak to their experiences. An Oncologist will be the doctor in charge of prescribing and overseeing treatment, so it is important that patients know what issues can be addressed via this route. A cancer survivor will give insight as to what to expect during chemotherapy, how to best deal with side effects and how to navigate the healthy system.
