How do dew point and relative humidity change with decreasing temperature?

Question

PPL(A) English - Private Pilot License (Aircraft) - Meteorology - How do dew point and relative humidity change with decreasing temperature?

QuizVDS · Accepted Answer

Dew point remains constant, relative humidity increases

QuizVDS · Answer

Dew point remains constant, relative humidity decreases

QuizVDS · Answer

Dew point decreases, relative humidity increases

QuizVDS · Answer

Dew point increases, relative humidity decreases

PPL(A) EN: How do dew point and relative humidity change with decreasing temperature?