She may not have ever been the top student in her class, but she had been given the freedom, thanks to those who were willing to give up theirs, to at least go to school.
In Passage 2, how does Cassandra's realization change the tone of the text?

A
Cassandra becomes less unsure, and the text becomes appreciative in tone.
B
Cassandra stops procrastinating, and the text becomes enthusiastic in tone.
С
Cassandra's self-consciousness increases, and the text becomes unsure in tone.
D
Cassandra's anxieties reappear, and the text becomes more passionate in tone.