Answer
b and c: at the freezing point
d: above the freezing point
e: below the freezing point
Work Step by Step
Graph b shows that the water cools to the freezing point, and then the ice increases to the freezing point.
Graph c shows that the water cools to the freezing point, and the ice increases to the freezing point. The water and the ice reach the freezing point at the same time.
Graph d shows that the ice increases to the freezing point, melts, and then increases above the freezing point.
Graph e shows that the water decreases to the freezing point, freezes, and then decreases below the freezing point.