Detailed Instructions: 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.
Problem:Title: New Shoes. Sentence 1: Bob wanted new shoes to go running in. Sentence 2: He went to the mall that day looking for the perfect pair of shoes. Sentence 3: He found the shoes he wanted, but the store didn't have his size. Sentence 4: He ended up leaving the mall empty handed. Choices: a. The prize-winning photo had been taken by their dog. b. Instead, he decided to buy the shoes online.
Solution:
b