What is the boiling point of water in Celsius?

Water boils at a temperature of 100 degrees Celsius under standard atmospheric pressure, which is the pressure at sea level. This boiling point is a fundamental property of water and is often used as a reference point in thermodynamics and various scientific calculations. The boiling point can change with variations in atmospheric pressure; for example, at higher altitudes where pressure is lower, water will boil at a temperature below 100 degrees Celsius. Recognizing the boiling point is crucial, as it plays a significant role in cooking, chemical reactions, and understanding natural processes like the water cycle. The other options provided fall outside the standard boiling point of water under normal conditions, making them incorrect in this context.