Final answer:
The sentence exemplifies an external conflict between the whole class and Kris due to her reminding the teacher about the pop quiz.
Step-by-step explanation:
The sentence"The whole class was angry at Kris after she reminded the teacher about the pop quiz" exemplifies an external conflict between the whole class and Kris. The conflict arises because Kris reminded the teacher about the pop quiz, which likely was not well-received by the rest of the class. The external conflict is characterized by the anger of the whole class towards Kris.
Learn more about external conflict in English literature