Final answer:
Water bottles are usually delivered to the main cabin at the beginning of a flight, after meals, and during pre-arrival service. While 'At the beginning of the flight' is a common time for the initial water service, availability on request is standard during the flight.
Step-by-step explanation:
The delivery of water bottles to passengers in the main cabin of a flight varies by airline and the specific procedures they follow. However, water is typically offered at multiple times during a flight. Water is often provided:
- At the beginning of the flight, once cruising altitude has been reached and it is safe for the cabin crew to move around.
- Throughout the flight as part of the refreshment services.
- After meal service to help passengers stay hydrated, especially on long-haul flights where meals are served.
- During pre-arrival service, which is a final refreshment service before the plane begins its descent.
Choice (d) At the beginning of the flight is a common time for the initial water service, but it's important to note that water should be available to passengers upon request at almost any time during the flight.