Answer:
B. It doesn’t pay to put things off is the correct answer.
Step-by-step explanation:
In the passage, both John and Little Mabel are given a task, which is to do their homework if they wanted a piece of pie. Little Mabel does it and gets the promissed reward; on the other hand, John prefered to hang around and put off his task thinking the he'd be able to catch up. When his mother arrived, he had not finished homework, so he did not get a piece o pie. If he hadn't put things off, he would have received the pie, so B is the correct answer.