What characterizes unstable air in terms of precipitation and visibility?

The characteristics of unstable air are well captured by the selection of cumuliform clouds, showery precipitation, and turbulence. In unstable atmospheric conditions, warm air rises quickly, leading to the formation of these types of clouds, which are typically fluffy, puffy, and can extend to significant heights. This rapid upward movement of air can result in varying precipitation patterns, often manifesting as brief but intense showers.

Additionally, the turbulence associated with unstable air can be quite significant. The rising and falling of air pockets can create bumpy flying conditions, which is commonly experienced during flight in areas of unstable air masses. Therefore, the presence of cumuliform clouds, alongside showery precipitation, distinctly highlights the instability of the air, as these conditions are indicative of dynamic weather systems that are prone to change.

In contrast, the other choices do not align with the characteristics of unstable air. For instance, stable clouds are typically stratiform and do not lead to significant precipitation, thus reflecting conditions of stability rather than instability. Similarly, a state of stable air with increased moisture would suggest a potential for fog or stratiform precipitation but would not imply the dynamic, showery conditions described in the correct answer. Lastly, low precipitation with good visibility is characteristic of stable air conditions, not