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.
Q: Title: Windy Day. Sentence 1: It was a windy day. Sentence 2: Freddy made his way down the street, holding onto his hat. Sentence 3: A strong gust engulfed him. Sentence 4: In his surprise, he let go of his umbrella. Choices: a. His roommate unclogged the sink. b. The umbrella tumbled down the sidewalk.
A:
b