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: Library. Sentence 1: Paxton's mom dropped him off at the public library. Sentence 2: Paxton browsed the books in the nonfiction section. Sentence 3: He found a book about Ancient Egypt. Sentence 4: Paxton carried the book to the checkout counter. Choices: a. He gave his library card to the woman behind the counter. b. Grant had gotten a hole in one!
a

Title: Armpit. Sentence 1: Dan was having a hard time keeping his pen out of his mouth. Sentence 2: He had a habit of chewing on the cap as he worked. Sentence 3: Dan's dentist told him he needed to stop this habit. Sentence 4: He rubbed his pen in his armpits to make it too nasty to chew on. Choices: a. Dan was dismayed when it didn't help. b. Tim and Jerry's parents activated the parental controls on their TV.
a

Title: Terry And The Toilet. Sentence 1: Terry had to go to the bathroom. Sentence 2: When he was done, he flushed the toilet. Sentence 3: The toilet didn't flush and overflowed. Sentence 4: He had to get a plunger to unclog the toilet. Choices: a. He unclogged it but had to spend the day cleaning the water out. b. So he cleaned it up immediately and never had a sore throat again.
a