What is the most common way air becomes saturated so that condensation occurs?

What is the most common way air becomes saturated so that condensation occurs?
 
  A. Water vapor absorbs latent heat from the air.
  B. Water vapor is warmed and turns into a gas.
  C. Water vapor is added to any air mass.
  D. Water vapor is cooled below the dew point.
  E. Water vapor releases latent heat into the air.

Question 2

What is the dew point temperature?
 
  A. the temperature air must reach to descend
  B. the ideal temperature for condensation
  C. the temperature air must reach to saturate
  D. the ideal temperature for evapotranspiration
  E. the temperature air must reach to sublimate

Question 3

What is the main determinant for airs water vapor capacity?
 
  A. volume of air mass
  B. atmospheric composition
  C. air pressure
  D. temperature
  E. air density

Question 4

Which measure of humidity describes how close the air is to saturation with water vapor?
 
  A. relative humidity
  B. vapor pressure
  C. specific humidity
  D. saturation
  E. absolute humidity

Question 5

What is specific humidity?
 
  A. balance of evaporation and condensation
  B. mass of water in a given volume of air
  C. pressure that water vapor exerts in air
  D. mass of water in a given mass of air
  E. ratio of actual water vapor to capacity of air

Question 6

Which humidity measure describes the mass of water vapor per volume of air?
 
  A. relative humidity
  B. absolute humidity
  C. specific humidity
  D. mixing ratio
  E. vapor pressure

Question 7

What occurs when water molecules in the air exert the maximum possible pressure at a given temperature?
 
  A. absorption of latent heat
  B. saturation
  C. vapor pressure
  D. evaporation
  E. release of latent heat