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.

Title: Boxing. Sentence 1: Mort wanted to be a boxer when he grew up. Sentence 2: He asked his parents to sign him up for lessons. Sentence 3: They encouraged him to take karate instead. Sentence 4: They reasoned it was less likely to injure him. Choices: a. He had the time of his life. b. Mort accepted the offer and slowly forgot about his boxing dreams.
b