For the first choice, I would definitely prefer to live in a city underwater. Sound can't travel very well in both space and underwater, which is nice, but I feel like every move you make in space looks awkward, and in water it looks graceful. Plus, there are no animals in space, it would get boring to just see human faces. In the water, I could meet so many new creatures and learn a lot of things, it would be awesome.
And I have a looooot of other things I could say for preferring the underwater city, because I love water so much, but it would be a super long message in the forum and it would get annoying to just listen(or read?) to me ramble...
For the second choice, I don't celebrate Christmas, so I prefer the second and the last sweater since the last one isn't too Christmas-y and the second one is funny, but I doubt I would wear any of them. They would just stay in my closet or get donated😅
For the third choice, I have no idea because I don't really care about big places like cities or countries. So my answer is: Wherever the houses are the most comfortable to live in.