Which of the following best describes a characteristic of stable air?

Stable air is typically characterized by the presence of stratiform clouds. This type of cloud forms when the atmosphere is stable, meaning that the air does not rise easily. In stable conditions, the air is more likely to remain layered instead of creating the vertical development seen in cumulus clouds, which usually signifies instability. When air is stable, it resists vertical mixing, resulting in smoother, more uniform cloud layers typically associated with stratiform clouds, such as stratus, which can influence weather by producing gentle precipitation.

In contrast, fair weather cumulus clouds suggest rising air and instability, as they form due to warm air rising and cooling to form clouds. Unlimited visibility may occur in stable conditions, but it is not a defining characteristic. Strong turbulence, on the other hand, is associated with unstable air that promotes vertical movements, leading to choppy conditions rather than the smooth, layered appearance typical of stable air.