Teacher:In this task, you're given the title of a five-sentence story, the first four sentences, and two options for the fifth sentence as a and b. Your job is to pick the sentence option that seamlessly connects with the rest of the story, indicating your choice as 'a' or 'b'. If both sentences are plausible, pick the one that makes more sense.
Teacher: Now, understand the problem? Solve this instance: Title: Mark's Broken Arm. Sentence 1: When Mark was in first grade he slipped off the jungle gym at school. Sentence 2: As he hit the ground, Mark felt a sharp pain his his left wrist. Sentence 3: Mark's teacher sent him to the school nurse. Sentence 4: The school nurse could tell his arm was broken and called Mark's mom. Choices: a. When she got there, Niki and Bumper were waiting at the curb! b. She took him to the doctor to get a bright orange cast.
Student:
b