Which of the following definitions best describes an enclave?
a. a separate part of a city dedicated largely to one group
b. an industrial neighborhood in a manufacturing zone
c an area around a city that has not been influenced by immigrants
d. a region of a city that was established as off-limits to immigrants

A. a separate part of a city dedicated largely to one group

Explanation:

The enclaves represent separate parts of the cities where one group is dominant. This often happens with the migrants, as very often they look to live next to compatriots so that they can communicate and have easier adaptation in the new place. Unfortunately, the enclaves make lot of problems, as the people living in them often don't even try to integrate, but keep their own culture, speak their own language, set their own rules, which results in divisions on ethnic or religious  basis.

since most of current immigration into the u.s., both legal and illegal, is coming from latin america. it would be very difficult to imagine or rationalize a country my fellow citizens are trying desperately to flee into, would pose a threat to my prosperity or freedom. since the u.s. has a long history of intervention, but no record of permanent occupation, i would not feel oppression is the main objective.  

the largest free trade nation, along with the largest gdp in the world wanting to expand it's economic policy on us, and including us, could only be positive. the u.s. government has no interest in, or way of simply forcing american culture on us. and has no track record of it. other nations that adopted american social culture, or "americanization" did so voluntarily, mainly through the choice of allowing american businesses and u.s. citizens to come into their nations, as free operatives.

it foreshadows the theme of the paragraph and hints the topic that will be discussed in the paragraph!