In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D". 

[EX Q]: [header] How to stay young [title] Challenge yourself to try new things. [step] Go out dancing, joining a book club or a hiking club, or try out for a community chorus. Singing, dancing, and finding new ways to stay active all contribute towards keeping a youthful outlook on life. <sep> (A) Here are some things to take into account : [substeps] Spend less time studying or practicing. Read only the books you are interested in, do not read video games, and do not browse old magazines or websites. (B) [substeps] Don't be afraid to laugh at yourself. Trying new things with joyfulness raises your levels of dopamine and energy levels. (C) [substeps] Try a fun game like punch or catch. Then, in the morning, you'll feel fresh and energized, and all your racing thoughts will be washed away. (D) If you can, challenge yourself to put in hours or weeks into each of these activities. Try hard but don't give up if you cannot help someone in need.
[EX A]: B

[EX Q]: This video allows viewers to hear the testimony of a customer who has used the pro roofing service. First the man tells how he heard about the service and how great it is. he <sep> (A) also says that he chose pro roofing because the neighbors chose it and persuaded him by telling how great the service is. (B) gets the materials to do the job and is joined by a group of small children who are drinking lemonade at the lemonade stand and talking. (C) starts by explaining how he is going to first tell the detail of creating a casing using an iron, then he starts on eggs and bacon. (D) talks about some graphic details.
[EX A]: A

[EX Q]: [header] How to find out if your guppy is pregnant [title] Notice a belly bulge. [step] Like women, the female guppy will get larger, as if it's being inflated. Sometimes this can just be bloating and not pregnancy. <sep> (A) If the guppy's belly part rises significantly, she is likely pregnant. If that happens, get to the hospital. (B) If your guppy seems to have a bulge, puts its back up against you, or moves around quite a bit, it may be pregnant! [title] Stick an ultrasound needle into her body. [step] These can be inserted through your guppy's pelvic wall. (C) Spotting that bulge requires a lot of attention. Fat glands on the belly are the first part of giving your water when you're carrying your baby. (D) But if you monitor your guppy's belly for several weeks and it continues to get bigger over time, your guppy is probably pregnant. [substeps] Your female guppy is getting close to delivery time when the she is very large and has a boxy appearance.
[EX A]:
D