Answer:
B - Sótano
Explanation:
Sótano means basement, and basements are usually downstairs (below ground-level).
The answer is actually D. Neutral for the first one and C. Indigenous for the second one.
I know these are 100% correct because I just took the quick check. ;)
Start with: 11a into 17b into 19a into 13b into 18a into 14b into 15a into 12b into 17a.
Hope this helps and makes sense to you. Best of luck.