The vapour pressure?

A.

increases non-linearly with measuring temperature

B.

increases linearly with increasing temperature

C.

decreases linearly with increasing temperature

D.

decreases non-linearly ith measuring temperature

Correct answer is A

The vapor pressure of any substance increases non-linearly with temperature, often described by the Clausius–Clapeyron relation.

As the temperature of a liquid or solid increases its vapor pressure also increases.

Conversely, vapor pressure decreases as the temperature decreases. 

i.e. vapor pressure is directly proportional to temperature