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:
D. A prententious suburban neighborhood
Explanation: The space was a kind of meadow, framed by two mansions, each so abundant with backyard paraphernalia, Nathan felt as if he’d entered the prop closet of a studio dedicated to making movies <u>about suburban American excess.</u>
The cafe cozy and was buzzing noisily with activity.
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