Final answer:
A stable air mass is most likely to have the characteristic of poor surface visibility due to the calm and stagnant atmospheric conditions.
Step-by-step explanation:
A stable air mass is most likely to have the characteristic of poor surface visibility. In stable air, atmospheric conditions are calm and there is little to no vertical movement of air. This lack of turbulence results in the air being more stagnant, which can lead to the accumulation of pollutants such as smoke, haze, or fog, reducing visibility.