The mountains are a series of mountain ranges that run throughout mexico.
a. sierra madre
b. patagonian
c. andes
d. rio de la plata

I think the correct answer among the choices presented above is option A. The Sierra Madre Mountains are a series of mountain ranges that run throughout Mexico. It consists of  the Sierra Madre Occidental, the Sierra Madre Oriental, and the Sierra Madre del Sur.

980 is the correct answer

The answer is c) people evacuated but almost all returned