What must flight attendants announce 2 hours after door closure?

The requirement for flight attendants to announce the taxi delay and begin service two hours after door closure is crucial for maintaining clear communication with passengers. This announcement keeps passengers informed about the status of the flight, particularly if there are any delays on the tarmac, and it outlines the expectations for onboard service. It helps to manage passenger comfort and sets the stage for a smooth service experience, reinforcing the crew's role in providing excellent customer service.

Furthermore, communication during extended delays is a vital aspect of passenger handling, as it helps alleviate anxiety and uncertainty among those on board.

Other choices, such as the introduction of crew members, end of service announcements, and emergency safety procedures, serve different purposes and are not typically associated specifically with the timing two hours after door closure.