Which set of weather characteristics is typical of an unstable air mass?

Why: The Remote Pilot Study Guide's stability comparison table lists unstable air as producing cumuliform clouds, showery precipitation, rough air (turbulence), and good visibility except in blowing obstructions — because unstable air allows small vertical disturbances to grow larger, resulting in turbulent, convective weather.

• Lists the study guide's characteristics of stable air, not unstable air — the two columns of the table are reversed.
• Describes an idealized calm-weather scenario that matches neither the stable nor unstable columns in the source table; it isn't one of the two characteristic sets the guide actually identifies.