What is a crucial aspect of passenger safety during turbulence?

Ensuring passengers remain seated and buckled is a crucial aspect of passenger safety during turbulence. When an aircraft encounters turbulence, it can experience sudden and unpredictable movements. Passengers who are unbuckled may be thrown from their seats, leading to potential injuries not only to themselves but also to others around them. Keeping seatbelts fastened is a fundamental safety measure that can significantly reduce the risk of injury during these turbulent moments. It is essential for the crew to communicate the importance of this practice and ensure compliance, as it acts as a protective barrier against the dynamic conditions that can occur in the air.

The other options do not contribute to passenger safety in turbulence. Keeping the cabin lights off might be relevant in certain circumstances, but it does not directly enhance safety during turbulence. Encouraging movement in the aisles contradicts the need for passengers to remain seated and buckled, which is vital for their safety. Ignoring the seatbelt signals undermines the entire safety protocol established by flight crews to protect everyone onboard during periods of turbulence.