What type of announcement is made to inform passengers about safety procedures?

The correct answer is a Public Address announcement. This type of announcement serves a crucial role in keeping passengers informed about safety procedures aboard the aircraft. It is typically made over the aircraft's PA system and is designed to ensure that all passengers can hear vital safety information, including emergency exits, use of seatbelts, and safety equipment.

Public Address announcements are used to convey important messages in a clear and authoritative manner, making them the ideal choice for disseminating safety protocols. They are meant to capture the attention of all passengers in a timely fashion, which is essential for maintaining safety during the flight.

Other types of announcements such as service announcements might address general information about services, while a cabin briefing is more interactive and may involve personal engagement from the flight crew. Safety instruction typically refers to the content of the messages conveyed, but it lacks the connotation of a formal announcement format that ensures uniform delivery to all passengers.