The answer, in my opinion, is the second sentence, "The coach who is an expert in the sport explained the revised rules to us". Here, the "Who is an expert", is presumably the nonessential clause.
The poet's use of quotation marks and dramatic shift in word choice in this excerpt from "Attack the Water" suggest that these words are coming from another source, such as the news.
This accounts for the change in word choice, as the news, would have been written or spoken by someone else. Also, adding this to the poem helps describe the situation in Vietnam from an outside standpoint.
Hi there!!!!!!!!!!
The answer to your question is definitely<span>
C. They are too busy with visitors.
Hope this helps:)
~ TRUE BOSS</span>
Answer: the second and the last hope this helps!!!!
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"The" boy was walking his dog