Answer:
D. Tia is polite to Emma even though Emma is rude which shows that Tia is confident about her own abilities and doesn't need to prove it
Step-by-step explanation:
According to the given excerpt, it is narrated that Tia and Emma are having a discussion about an upcoming debate between the two and while Tia is courteous, Emma is rude and belligerent.
However, Tia maintains her cool even though Emma was rude because Tia is confident about her own abilities and doesn't need to prove it.