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: Dunking Darius. Sentence 1: Darius wants to learn how to dunk a basketball. Sentence 2: He is going to spend all weekend working on his jumping. Sentence 3: He is also going to work on his dribbling and footwork. Sentence 4: By the time he is done practicing he'll be able to dunk. Choices: a. Darius is excited to show his friends his new skills. b. She almost cried with happiness!
a