What distinguishes common carriage from private carriage?

Common carriage is characterized by publicly advertised services for hire, which means that common carriers must offer their services to the general public without discrimination among clients. This includes transport companies like airlines, buses, and freight carriers that provide their services to anyone who pays the fare or fee. The key aspect of common carriage is the obligation to serve all individuals who seek their services within the scope of their business.

In contrast, private carriage typically involves services provided to specific individuals or companies under negotiated terms and conditions, which may not be publicly advertised. This mode of transport is not required to serve the public at large and can impose restrictions on whom it serves.

The option highlighting "publicly advertised services for hire" directly captures the essence of common carriage, making it the distinguishing feature that separates it from private carriage.