Final answer:
The correct term is 'relative humidity,' which compares the actual moisture in the air to the maximum it could hold at the same temperature. Relative humidity of 100% indicates maximum moisture capacity, often leading to condensation at the dew point.
Step-by-step explanation:
The term that refers to the amount of moisture contained in a quantity of air compared to the maximum amount of moisture the air could hold at the same temperature is relative humidity. It measures how much water vapor is present in the air relative to the amount that would be present if the air were fully saturated at the same temperature. When the relative humidity reaches 100%, the air has reached its maximum holding capacity, leading to saturation, and often resulting in condensation forming dew, fog, or precipitation if the temperature drops to the dew point.