Why does air at 75% relative humidity and 30°C make your skinfeel stickier than air at 75% relative humidity and 10°C

Here are the choices:

Warm air rises while cold air falls.

The warmer air contains less water vapor per unit of volume.

The warmer air contains more water vapor per unit of volume.

Moist air has lower density than dry air does.

The best answer is: The warmer air contains more water vapor per unit of volume.

Answer:its more water