Which service describes flights offered to the public on a published timetable for designated routes?

• A. Charter service
• B. On-demand service
• C. Scheduled service
• D. Private service

Answer: (C)

Scheduled service describes flights that operate on a published timetable along designated routes, and are available to the general public. This is the standard form of commercial air travel, with regular departures and arrivals, fixed frequencies, and tickets sold to anyone traveling on those routes. The other options refer to flights not tied to a public timetable: charter or private services are arranged for a specific party and don’t follow a published schedule, while on-demand services fly only when requested and without a fixed timetable. So the description in the question matches scheduled service.