I believe protein is derived from the Greek word proteios
Answer:
One change that is being implemented is that "school lunches are required to provide a specific variety of produce each week" (Rita 4).
Children who bought school lunches are "30 percent more likely to be obese" than students who brought their lunches from home every day (Newman 24).
Research has found that only 6 percent of all school lunches are considered nutritious (Gardiner and Mabel 401).
Explanation:
A quotation occurs when the author of a text wishes to use the words of another author, who are in another literary work. So that this practice does not turn into a case of plagiarism it is important that the author who will make a quote provides information that allows the reader to realize that a quote is being made, in addition to being able to know the name of the author and where to find the original text.
In this case, the MLA format states that for a quote to be made, it is necessary, first, that quote be placed in quotation marks. Then, it is necessary that, in parentheses, the surname of the author and the page number where the quote can be found are presented.
Expository text gets to the point rather quickly. It is intended as education rather than just narrative text. An example of narrative text is the Excerpt by Charles Dickens which is meant to draw a picture of what this woman was like.
So the last one is out.
The first one talks about volcanoes and how they are classified. That's one of your answers if you are trying for brevety and education.
I think the second one would also be a choice. It is trying to show you the nature of anxiety and what causes it. You learn a lot about symptoms from reading it. It's quick and to the point. Expository? Yes.
I don't think four is exactly expository, but I might be wrong. It sounds too argumentative to be completely expository. It wouldn't be my first choice even though I have read Twain a great deal, beginning in my teens. He always has something pointedly funny to say about the human condition. So it's hard for me not to include him in anything. It's not exactly narrative either. The tough ones are three and four.
Three tries to tell you what it would be like to live in another country. I think it likely is the choice you are looking for.
Answers 1,23. I could be wrong, so if you have a different answer in mind, go with it.