From what country did many the families of students at miami high school come from
a) cuba b) argentina
c) italy
d) spain

During the Mariel boatlift of the early 1980's, there was a large influx of Cuban immigrants. Many of those settled in Miami, and smaller cities in Florida. Most Miami schools, did have a sizeable amount of Hispanics, with Cubans bring the majority.

Because it’s a specified person/thing

Ithink its b) built underground reservoirs