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: Bookshelf. Sentence 1: Spencer was moving. Sentence 2: He tried to lift the bookshelf. Sentence 3: The bookshelf fell down. Sentence 4: It broke all over. Choices: a. He walked back in because it was cold. b. Spencer bought a new one.
b

Title: Science Class. Sentence 1: I always hated science class due to how boring it was. Sentence 2: When I told my friend, she laughed. Sentence 3: She told me that science helps make the world a better place. Sentence 4: She explained all of the scientific findings that changed the world. Choices: a. I then realized that I foolishly went over my budget. b. After that I had a deeper appreciation for science.
b

Title: The Park. Sentence 1: Tommy decided to go to the park. Sentence 2: He got on his bicycle and headed there. Sentence 3: On his way he stopped by the store and bought an ice cream cone. Sentence 4: Tommy got on the swings at the park and played with other children. Choices: a. After a few hours, he got tired so he biked back home. b. Richard's dad ended up driving him to the mall.
a