Assertion : Increasing pressure on pure water decreases its...

According to Clapeyron-Clausius equation, $\frac{d T}{d P}=\frac{T\left(V_l-V_s\right)}{\Delta H_f}$ Since density of ice is less than that of water, $V_s$ is greater than $V_l$. In other words, the expression on the right hand side of the above equation is negative. This means that the increase of pressure must lower and decrease of pressure must raise the freezing point.