What is the freezing point of water in degrees Celsius?

The freezing point of water is defined as the temperature at which it transitions from a liquid to a solid. This occurs at 0 degrees Celsius under standard atmospheric conditions. At this temperature, water molecules have lost enough kinetic energy that they can begin to form the rigid structure of ice. This is a fundamental concept in thermodynamics and is critical for understanding phase changes.

The other choices provided do not represent the freezing point of water under normal atmospheric pressure. Values such as -10°C, 10°C, and 5°C do not correspond to this transition, illustrating common misconceptions about temperature and states of matter.