A strong feeling of sadness
Rational and logical are quite similar in meaning but rational is something that has logic. These two words are close synonyms and not antonyms.
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.
The echoing sound of his voice shows his excitement that his brother is communicating
The correct answer is a subject and a verb~