Explanation:
The answer is C so the workers will know what to do
B you would be able to eliminate a and c because it isn't true that it does have any effect on the meaning of the poem and you could tell that personification is used and that it isn't nonsense it's just figurative language
a. three major supporting details.
There are three supporting details for the main idea on the theories to explain why people yawn. Each of the supporting details contains a key word or phrase to indicate that they indeed are a main supporting detail. These key words and phrases are "One explanation is...", "A second theory...", and "Yet another explanation...". These all show the supporting detail is contained in the sentence. The last sentences just build and connect to information that has already been introduced.