Which characteristics are typical of stable air?

Stable air is characterized by its resistance to vertical movement, which results in certain weather phenomena. One of the most notable characteristics of stable air is poor low-level visibility, often due to the presence of fog, haze, or low clouds. This lack of visibility is commonly associated with steady precipitation, as stable conditions tend to lead to light, continuous rain or other forms of precipitation rather than the convective, showery precipitation seen in unstable air.

In contrast, the other options presented depict features typically associated with unstable air. For instance, heavy turbulence and strong winds tend to occur with instability in the atmosphere, leading to more dynamic weather patterns. Cloudy weather with gusty winds further indicates a lack of stability, where air is moving vertically and horizontally in various forms.

Therefore, the combination of poor low-level visibility and steady precipitation directly aligns with the characteristics of stable air, making it the correct choice.