At approximately what altitude AGL should bases of convective-type cumuliform clouds be expected?

Cumuliform clouds, especially those associated with convective activity, typically form as a result of rising warm air. The bases of these types of clouds can vary depending on factors such as temperature, humidity, and atmospheric conditions.

The correct answer, indicating that the bases of convective-type cumuliform clouds are expected at approximately 8,800 feet AGL, aligns with the average cloud formation associated with warm and humid air rising into the atmosphere. Under standard atmospheric conditions, the height of cloud bases is often influenced by the lifting condensation level (LCL), which varies but commonly can be around that altitude when considering typical environmental conditions conducive to convective activity.

In general, 8,800 feet AGL reflects conditions where convective clouds can form and develop, as this height is often where sufficient lift can lead to the condensation process, resulting in cumulus clouds. Given that convective clouds are often indicative of unstable air where significant thermal activity is present, it's common to see their bases forming at this altitude under conditions conducive to strong convection.