In which atmospheric system would you typically expect to find many clouds and poor visibility?

A low-pressure system is typically characterized by rising air, which cools and condenses as it ascends. This process leads to the formation of clouds and precipitation, often resulting in poor visibility. In such an environment, the air is conducive to the development of various weather phenomena, including storms, rain, and fog, all of which contribute to lower visibility.

In contrast, high-pressure systems are generally associated with descending air and clearer skies. Stable systems typically indicate settled weather with few clouds, while unstable systems can lead to severe weather but may not consistently produce widespread cloudiness and poor visibility as seen in low-pressure systems. Thus, a low-pressure system stands out as the atmospheric condition most likely to yield many clouds and reduced visibility.