Which of the following 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 separate part of the city dedicated largely to one group best describes an enclave. The correct option among all the options that are given in the question is the first option or option "a". This part of the city has to have people having a common culture and then only will they form an enclave and reside together very peacefully.