What is the ICAO code for Columbia?

The ICAO code for Columbia is assigned as KCAE, which stands for Columbia Metropolitan Airport located in South Carolina. The structure of ICAO codes is based on geographical regions, and the letter 'K' designates airports in the United States. The subsequent letters ‘CAE’ specifically identify Columbia Metropolitan Airport.

The other options represent codes for various other airports across the United States but do not correspond to Columbia. For example, KCOL is not an active ICAO code; KCOM is not recognized as belonging to Columbia; and KCLU does not correspond to Columbia Metropolitan Airport. Thus, KCAE is the correct designation for this specific location, aligning with the ICAO convention of airport code assignments.