What is one important design feature in aircraft that enhances crash survivability?

One important design feature in aircraft that enhances crash survivability is energy absorption. This refers to the aircraft's structural design, which is specifically engineered to absorb and dissipate energy during a crash. Components such as the fuselage, wings, and landing gear are designed to crumple in a controlled manner, reducing the impact forces transferred to the occupants.

This energy absorption capability helps to protect passengers and crew by minimizing the severity of injuries they may sustain during an impact. By designing aircraft to effectively manage and absorb crash forces, manufacturers significantly improve overall safety outcomes.

The other options, while relevant to various aspects of aviation, do not directly contribute to crash survivability in the same manner. For example, flight behavior pertains more to how an aircraft performs in the air rather than during a crash, and noise dampening focuses on sound reduction, which isn’t a priority in impact situations. Speed optimization relates to flight performance and efficiency, not to enhancing the survivability of occupants in a crash scenario.