I think B have a nice day
The sentence in which the underlined infinitive phrase functions as a subject is the last one - to quickly move large groups of people is the purpose of public transportation.
<em>To quickly move </em>is the infinitive phrase, and it is a subject.
Answer:
Culture.
Explanation:
According to a different source, this is the rest of the question:
Read the passage from “I Know Why the Caged Bird Sings.”
<em>Mrs. Bertha Flowers was the aristocrat of Black Stamps. She had the grace of control to appear warm in the coldest weather, and on the Arkansas summer days it seemed she had a private breeze which swirled around, cooling her. She was thin without the taut look of wiry people, and her printed voile dresses and flowered hats were as right for her as denim overalls for a farmer. She was our side's answer to the richest white woman in town.</em>
The passage above describes how Marguerite thinks of Mrs. Bertha Flowers. We learn of this opinion based on the things that Marguerite chooses to highlight about Mrs. Flowers. Marguerite describes how Mrs. Flowers was an sort of "aristocrat," which implies a cultured woman. She also talks about Mrs. Flowers in ways that suggest grace and elegance. This implies that Marguerite cares about culture.
C. adverbs and adjectives
sorry if i’m wrong