In this task, you're given a context passage, followed by a question that needs to be answered. Based on the paragraph, you must write unambiguous answers to the questions and your answer must refer to a specific phrase from the paragraph. If multiple answers seem to exist, write the answer that is the most plausible.

My son needed his diaper changed just a few hours ago. I noticed that his diaper had a distinct smell and felt full, so I carried him back to his changing table. I laid out a disposable diaper in his size and baby wipes. I took off his shorts and his dirty diaper, using it to clean up some of the mess from his bottom. I folded it over so that the outside that was clean was underneath him. I then used the wipes to clean up any mess that was leftover on his bottom. Once he was adequately clean, I grabbed a new diaper and slipped the back under his bottom. I made sure to talk to him throughout the entire process, and gave him a rattle to play with so that he was distracted. I pulled the tabs on the sides of his diaper across the front and secured them around his waist. I put his shorts back on, picked him up, and threw away the dirty diaper. He felt much better and was ready to play afterwards. 
Question: Did they throw away the old diaper?
Yes

But the dorm is still the same ; my room even smells the same , although Martin's room was unbeknownst to us randomly painted with glow in the dark paint , which was kind of creepy last night , but we fell asleep really quick .. Even if it wasn't for long . -_-Anyway . 
Question: What could be the reason why Martin's room had glow in the dark paint ?
Martin wanted his room to be different .

Now that I've caught up on sleep , I am no longer second guessing my own ability to do well . Which I was most definitely doing last night . I think it's a very good thing I decided not to take calculus . I'm already better at the alphabet , without even practicing anymore . 
Question: Why was it a good idea that I decided to not take calculus ?

It would have added to my already heavy workload .