What must a flight attendant ensure about overhead bins before takeoff?

Ensuring that overhead bins are securely closed and that luggage is stowed correctly is critical for the safety and comfort of passengers during takeoff. A flight attendant must check that all items placed in the overhead compartments are not only secure but also within the weight limits of the bin. This is important because unsecured luggage can shift, fall, or cause injury during takeoff and landing, especially when the aircraft experiences sudden movements. By verifying that the bins are properly closed and stowed, flight attendants are actively participating in the overall safety protocols of the flight, which is their primary responsibility.

While the other options touch on various aspects of cabin safety and organization, they do not directly address the critical safety need for overhead bins at the start of a flight. Labeled and accessible bins can aid in ease of access, and even distribution of packages can promote balance, but the foremost priority is ensuring that all compartments are securely closed before the aircraft begins to take off.