Letter D because it starts with “In Conclusion”. I am assuming that number 3 is the last sentence in the paragraph.
A. a proper noun is usually more specific than a common noun
Answer:
In the next two lines, that seems to refer to the statement above about the second path being grassier and less worn. Now the speaker suggests that the second path was equally, not less, worn: “the passing there / Had worn them about the same.” This seems to say that the two paths had had a similar number of people walking on them, so they were fairly equally worn.
Explanation: