At sea level, water begins to boil at which temperature?

Answer: B — 212 degrees Fahrenheit

Water boils at 100 degrees Celsius, which is equivalent to 212 degrees Fahrenheit at sea level. This boiling point is a fundamental property of water that is critical in various scientific and culinary applications. The temperature at which a liquid turns into vapor depends on atmospheric pressure, and at standard atmospheric pressure (1 ATM), this conversion occurs at those specific values. The boiling point can be essential for understanding cooking processes, distillation, or even certain scientific experiments where precise temperatures are crucial. Knowing these values allows individuals to make accurate decisions regarding temperature settings in various applications. While other temperature values provided in the options do correspond to temperatures above or below water's boiling point, they do not represent the boiling point of water at sea level under standard conditions. Therefore, 212 degrees Fahrenheit not only aligns with the commonly accepted boiling point of water but also serves as a critical reference point across many fields.