Which airport is represented by the ICAO code KPRN?

The airport represented by the ICAO code KPRN is Greenwood. In the system of ICAO codes, the prefix "K" indicates that the airport is located in the United States, and "PRN" identifies the specific airport designator. Greenwood is known as Greenwood-Leflore Airport, which matches this code.

This code structure is particularly useful for pilots, air traffic controllers, and aviation professionals as it provides a standardized way to identify airports around the world. The other choices, while they may represent valid airports, do not correlate with the ICAO code KPRN, which is specifically designated for Greenwood. Therefore, Greenwood stands out as the correct answer in this context.