What is the boiling point of water at sea level?

The boiling point of water at sea level is 100 degrees Celsius. This temperature is a fundamental physical property of water and is crucial in various scientific contexts. At sea level, the atmospheric pressure is about 101.3 kPa (or 1 atmosphere), which allows water to boil at this specific temperature.

At temperatures below 100 degrees Celsius, water remains in the liquid state, and when it reaches this boiling point, it transitions from liquid to gas (steam). This relationship between temperature and the state of water illustrates an important principle of thermodynamics and phase changes.

In contrast, other temperatures provided in the choices do not correspond to the boiling point of water at sea level under standard conditions. Thus, 100 degrees Celsius is recognized universally as the boiling point of water at sea level.