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: Cora's Treat. Sentence 1: Every day Ashley takes her dog Cora for a walk. Sentence 2: They go down the alley behind her house and around the block. Sentence 3: Cora knows the route very well and doesn't stray. Sentence 4: She also knows if she goes potty, she'll get a treat. Choices: a. Gary was filled with such joy that he would be a father of two girls. b. Since Ashley started walking her, she's stopped pottying in the house.
Student:
b