Since we are talking about pace, the words that seem to best reveal it are "hustled" and "hasty". The character we're reading about in this excerpt, Jenna, seems to be in a hurry, trying to get to class at the same time she's trying to study and memorize what she thinks will be on her test.
"To hustle" means to hurriedly move toward a certain direction. "Hasty" is the quality of being done urgently and swiftly.
I think it is The author thinks children who see stereotypes in the media can become confused about their own ethnic identity. Explanation: none of the other answers make sense but I will check after the test is graded
