Which circumstance best accounts for the distinct dialect spoken on ocracoke island, north carolina?
a. the influx of people from the mainland
b. the isolation of its permanent residents
c. the combined influence of french and spanish
d. the presence of several sizable ethnic groups

I'd say the correct answer is A, because the more people from the mainland came to live there, the more its language changed and developed a distinct dialect. 

B. Drive south on Park Road until you reach Euclid Avenue.
Addresses and street names are always capitalized
However, north, south, east, or west, they are only capitalized when they are part of a proper name or are indicating specific regions. They are not capitalized when indicating direction, like go south, or the north of France.