Final answer:
The hard crack stage, which is at a temperature range of 300 to 310 degrees Fahrenheit, is used for making lollipops and lifesavers, giving them their hard, brittle texture.
Step-by-step explanation:
The sugar stage used to make lollipops and lifesavers is the hard crack stage. This stage occurs when sugar syrup is heated to temperatures between 300 to 310 degrees Fahrenheit (149 to 154 degrees Celsius). At this high temperature, the syrup becomes the ideal consistency for molding into hard candies such as lollipops and lifesavers. Once the syrup reaches this stage, it will harden into a brittle, glass-like structure upon cooling, which is characteristic of these types of candies.