Which designator code is assigned to Fredericton, New Brunswick?

The designator code assigned to Fredericton, New Brunswick, is indeed YFC. Each code is part of the IATA (International Air Transport Association) designator system, which assigns unique three-letter codes to airports around the world. In this case, YFC specifically represents Fredericton International Airport. This code serves to streamline air travel and facilitate communication between travelers, airlines, and airport authorities.

The codes you may encounter for other choices, like YYC, YEG, and YDF, refer to different airports in Canada, which helps to illustrate how each location has been designated with a unique identifier. YFC is thus the correct answer, as it uniquely identifies Fredericton's airport in this context.