Upside and downside can mean a positive and a negative aspect of something, respectively. However, none of the options here present a couple of something negative and something positive: so I think we need to use the local meaning. So our analogy is:
on one extreme of some location (on the upper side): on the other extreme.
Therefore the best other couple is outside and inside: they also show two opposite locations.
Answer:
Hansel and Gretel is about a young brother and sister kidnapped by a witch who is into cannibolism. She lives in a house made of gingerbread, cake, confection, candy, and many other treats and pastries.The two children end up escaping alive by outsmarting her.
In "Civil Disobedience," Thoreau championed the idea that if a government is not going to improve itself, then it is the duty of the people to refuse to support it. This paved the way for non-violent protests, such as those led by Gandhi and Martin Luther King, Jr.
The second, fourth and fifth ones are complete when used in a paragraph. If they are not in a paragraph that supports the sentence, the fourth one is the only complete one.