What information should be provided to passengers during a pre-flight safety demonstration?

Providing instructions on seat belts, emergency exits, oxygen masks, and life vests is essential during a pre-flight safety demonstration because these elements are critical for ensuring passenger safety. Passengers need to understand how to properly secure their seat belts during the flight and in the event of turbulence. Knowledge about emergency exits is vital as it allows passengers to quickly locate the nearest exit in case of an emergency situation where evacuation is necessary. Understanding the use of oxygen masks is crucial for situations where cabin pressure changes occur, requiring supplemental oxygen. Lastly, familiarity with life vests is important for flights over water, enabling passengers to know how to use them if an evacuation onto water is needed. This information is specifically designed to prepare passengers for any emergency scenarios they might face during their flight, making it a vital component of airline safety protocol.