Melting point of ice (A) Increases with increasing pressure (B) Decreases with increasing pressure (C) Is independent of pressure (D) is proportional of pressure

A melting point is the temperature at which a substance changes from its solid phase to its liquid phase. Pressure is the force applied per unit area on a surface, typically affecting a substance's phase changes. A phase diagram is a graphical representation of the equilibrium conditions (i.e., temperature and pressure) for various phases of a substance.

For this question, we are interested in the solid-liquid equilibrium line because melting occurs at this boundary. For water, the slope of the solid-liquid equilibrium line is negative. This means when pressure increases, melting point decreases, and vice-versa.

Based on our understanding of the phase diagram for water and the concept of melting point, we can observe the following relationship: As pressure increases, the melting point of ice decreases.

Now that we know the relationship between pressure and the melting point of ice, we need to compare this relationship to the given options: (A) Increases with increasing pressure - This is not correct. As pressure increases, the melting point of ice decreases. (B) Decreases with increasing pressure - This is the correct answer. As pressure increases, the melting point of ice decreases. (C) Is independent of pressure - This is not correct. Pressure has an effect on the melting point of ice. (D) Is proportional to pressure - This is not correct. The melting point and pressure have a negative relationship, not a direct proportionality. So, based on our analysis, the correct answer is (B) Decreases with increasing pressure.