What consequence can occur when a wing rises after touchdown?

When a wing rises after touchdown, it can lead to a loss of directional control. This occurs because the aircraft becomes unbalanced; as one wing rises, the other wing may inadvertently drop, which creates an asymmetric lift condition. This situation can cause the aircraft to veer off its intended path, leading to a potential loss of control if not promptly corrected by the pilot. Maintaining a level attitude during rollout is crucial for preserving directional control, as any significant variation in wing height can affect the aircraft's stability on the ground.

In contrast, improved directional control would imply that the aircraft is maintaining its path effectively after touchdown, which is not the case when one wing rises. Increased ground speed is unrelated to the wing's position; instead, it is a function of the aircraft's velocity at touchdown and braking force applied. Enhanced lift performance would not apply on the ground, as lift is primarily a consideration during flight rather than during landing dynamics. Thus, the focus on the consequences of a wing rising after touchdown highlights the critical importance of maintaining balance to ensure safe and effective aircraft handling during landing.