Not necessarily. Grades can be considered a measure of a result, it would depends a lot of the result you are measuring. For example, if you measure the behaviour of interest in class, the student that is trying hard in class would score well. But it also can happen that when that student face a test get blocked and stressed and do not score that well. Grades will always depend on what is measured, and currently those measures will be strictly connected with the beliefs of the teacher and his understanding of the most effective way of teaching.
Answer:
The author most likely includes this supporting text to <em><u>reinforce the case study's point that bird flu is dangerous</u></em>.
Explanation:
The book "When Birds Get Flu" by John DiConsiglio delves into real cases of how people contract the bird flu. The book discusses infection cases and how avian influenza or bird flu began in Washington.
In the statement from the book, the author remarks that <em>"one or two sick chickens could infect a whole town [which could in turn] infect the country—or even the world."</em> By emphasizing the seriousness and infection level of the flu, <u>John DiConsiglio seems to reinforce the dangerousness of the bird flu.</u>
Thus, the correct answer is the first option.
The part of the question that gives us the most information is that we're looking for a contrast, or a way of comparison. So imagine you want to compare a big and a small elephant, you could say :
<span>although one is big, the other one is small
one is big which is good, conversely the other one is small which is also not bad
one is big, however, the other one is small
An elephant is big. in contrast that one is small
So we see that all four of them can be used to express contrast!
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