B NAFTA The North American Free Trade Agreement
Another case for the district
I dont know how it is used in your learning but amendments encourage more people to vote and participate in elections
The word is worried which describes the neighbor who helps the speaker in "Mending Wall" repair the wall. The tone of the main speaker is somehow distant trying to stop that force to love the wall. The neighbor may be worried of the speaker about his situation.
The answer would be letter D.