What type of turbulence might be experienced with Alto-cumulus clouds?

Alto-cumulus clouds are generally associated with a more stable layer of the atmosphere compared to other types of clouds. They usually form in a mid-level environment where there is relatively smooth airflow, which typically leads to conditions that would result in light turbulence. The presence of these clouds indicates some level of atmospheric instability, but the turbulence they produce is generally not severe or moderate.

Light turbulence can occur due to the natural movements in the air as it passes through and among these clouds. Pilots might experience minor bumps or slight variations in altitude, especially if flying at a lower altitude where thermal currents can interact with the cloud structure. However, the turbulence is usually manageable and does not pose a significant risk to flight safety.

Severe turbulence is often associated with more dynamic weather systems, such as thunderstorms or strong cold fronts, which are not characteristics of alto-cumulus cloud formations. Similarly, negligible turbulence would imply a very calm atmosphere, which isn't consistent with some activity indicated by the presence of alto-cumulus clouds. Therefore, the statement regarding light turbulence aligns with the typical conditions pilots may expect when flying in the vicinity of these clouds.