Final answer:
Scout's exclamation 'The world's endin!' from 'To Kill a Mockingbird' likely reflects her reaction to seeing something alarming or confusing outside, which is to be interpreted within the novel's context.
Step-by-step explanation:
The passage in question where Scout exclaimed, "The world's endin!" is from To Kill a Mockingbird by Harper Lee, an important work in English literature.
When Scout yelled these words, she likely saw something frightening or incomprehensible outside, which could easily be interpreted as a dramatic event or a significant occurrence within the context of the novel.
As the tutor, it's important to discuss the scene within its literary context to help the student grasp the narrative significance.