Which characteristic defines light turbulence?

Light turbulence is characterized by noticeable bumpiness during flight that does not typically lead to significant anxiety for passengers or crew. This type of turbulence can be felt as minor rocking or slight changes in altitude, similar to when driving over a rough surface, but it remains manageable and is usually not alarming.

In contrast, strong turbulence would introduce more severe movements that could cause discomfort, while severe turbulence could lead to substantial disturbances, potentially resulting in injury or damage. The last option refers to a steady, predictable flight experience, which does not describe turbulence at all. Therefore, the definition of light turbulence emphasizes its minor and manageable nature, supporting the correct identification of the first choice.