I'm not sure what the lesson is, but the answer that makes sense the most is number. Number because most lessons in subject-verb agreement concerns the singularity and plurality of the subject at hand
The correct option is 2)Argumentative: In an argumentative text you discuss a subject or problem from different perspectives. At this time, Anna Quindlen the author of "A quilt of a country" states that although the great diversity found in America creates a lot of problems in the cities, it also serves as a quality to make America more special, and for this she uses a literature metaphor: Quilt, to put into other perspective her intention in the text. Although the author recurs to real episodes happend in America It's not autobiografical because doesn't talk about a particular person's life. It's not fictional because most of information is based on real facts, although uses literature metaphors to make the idea clearer.
Most likely the purpose of a myth would be to show why honesty is a good quality, so the answer would be option C.
Hope this helps!
