What is a common result of lifting a stable air mass?

Lifting a stable air mass typically leads to the formation of stratiform clouds. When a stable air mass is forced to rise, it does so in a more uniform manner, which allows for gradual cooling and condensation of moisture. This process often results in extensive, layered clouds that cover the sky, characterized by their smooth, even appearance typically associated with stratus clouds. These clouds can produce light, steady precipitation over a wide area, which aligns with the behavior of air that does not exhibit significant vertical motion.

In contrast, options like the formation of cumulus clouds would require unstable conditions where warmer air rises quickly and leads to the development of more distinct puffy clouds. Increased vertical activity is typically observed in unstable air masses rather than stable ones, which inhibit vertical movement. Clear skies are more commonly associated with stable air that remains at lower altitudes without significant rising motion, yet this would not be a common result of lifting such air masses.