What characterizes a gentle breeze concerning wave activity?

The characteristic of a gentle breeze in terms of wave activity is accurately defined by small wavelets, crests being glassy, and no breaking. When there is a gentle breeze, the wind is light enough that it only creates small surface disturbances on the water, leading to a smooth appearance with glassy crests and no whitecaps.

Option B incorrectly describes the effects of a stronger wind. When winds are stronger, they begin to generate larger wavelets, crests can break leading to whitecaps forming on the surface of the water. Therefore, this option represents conditions associated with increasing wind strength rather than a gentle breeze.

Other options like strong winds causing chaotic surface conditions represent turbulent weather, while calm water with no visible movement signifies a lack of wind, neither of which align with the moderate wave conditions typical of a gentle breeze. Hence, the correct description of a gentle breeze involves minor, non-breaking wavelets creating a calm surface on the water.