It pertains that idea of how in real life everything has a begging and end (conclusion), so if you want a story to seem real, even tho it’s not, give the story a conclusion so it gives the story a realistic feel that you want your readers to have, convince that what u wrote could actually happen in life.
Answer:
sorry don't know good luck answering
It could be ex peculated that after confronting the teacher, Marcus would back down because he might feel threaten. The teacher asked him if he knew that "Zero - tolerance mean" and that could be taken as a tense situation, he might have to options. To apologise to him or face the consequences within this "zero tolerance" atmosphere. <span />