How do airlines build a profit-maximizing flight schedule? Group of answer choices a) By scheduling flights only during peak travel seasons. b) By focusing solely on non-stop flights, regardless of demand for connecting routes. c) By analyzing market demand, competition, and operational costs to optimize route selection and frequency. d) By offering flights to destinations with high tourism ratings. e) By exclusively operating long-haul international flights to maximize revenue. f) By prioritizing flights to destinations with the lowest airport fees and taxes