What feature is normally associated with the cumulus stage of a thunderstorm?

The cumulus stage of a thunderstorm is characterized by the presence of a continuous updraft. During this phase, warm, moist air rises in a vertical current, leading to the formation of cumulus clouds. As the air continues to rise, it cools and condenses, forming larger cloud structures that can develop into a mature thunderstorm.

This updraft is essential for the initial development of the storm and contributes to the growth of the cloud as more moisture is drawn into it. The continuous updraft allows for the cloud to build vertically, which is a key characteristic of the cumulus stage. As the process continues, the cloud may eventually transition into the mature stage of a thunderstorm, where additional features and dynamics come into play.

The other choices do not accurately describe this early stage. A continuous downburst, severe wind shear, and stratus formation are more associated with later stages or different conditions in thunderstorm behavior rather than the cumulus stage itself.