Answer:
1 and 5. 3 and 6. 2 and 4. They match.
Explanation:
It presents the main idea of the entire composition
I honestly think the answer is D.
"Grass" is actually a poem that was written by Carl Sandburg. This is a poem in which he has published right after the World War I which is in the year 1918. Based on this poem, you can sense an unforgiving tone in it. Therefore, I can say that the attitude that the author expresses is "anger". Hope this answer helps.