The answer is A nativists I did research on that
The answers are:
17.B
18.C
19.B
20.A
hope this helps (:
I would say 3, but in fact, it has at least a dozen climatic zones.
The three principal climatic zones are:
1) The tropical lowlands of the Caribbean region, wich are hot and humid
2) The interior uplands of the ishtmus, where the temperature climate is cool and damp in the valleys and plateaux, to cold in the mountains.
3) The lower Pacific slope and coastal plains, wich have hot and dry conditions
Well i took this test a while ago, plus we learned about this not to long ago, and from what i remembered the correct answer to this would be a certain institution of a single language for a government. truly hope this helps.