Which number identifies the Primary Commercial Service Airport count?

• A. 2,500
• B. 10,000
• C. 3,345
• D. 19,000

Answer: (B)

Airports are grouped by how many passengers board planes each year. A Primary Commercial Service Airport is defined by meeting a specific annual passenger boarding threshold. This cutoff is ten thousand enplaned passengers per year. If an airport has fewer than ten thousand but at least two thousand five hundred, it’s considered a nonprimary commercial service airport. So, the number that identifies the Primary Commercial Service Airport count is ten thousand. The other figures aren’t the cutoff: two thousand five hundred is the minimum to be counted as commercial service at all, three thousand three hundred forty-five is just a random count, and nineteen thousand is simply a larger example that would still be primary, not the defining threshold.