Question

water vapor in the air condenses into liquid droplets when the water reaches

a. a warm front
b. its critical elevation
c. its dew point
d. a cold front

Explanation:

The dew point is the temperature at which air becomes saturated with water vapor and condensation occurs, forming liquid droplets. A warm front (A) and cold front (D) are weather fronts related to air mass movement, not directly to condensation based on water - vapor saturation. "Critical elevation" (B) is not a standard term related to this condensation process.

Answer:

C. its dew point