The correct answer is A) Celsius.
Explanation: The Celsius scale, also known as the centigrade scale, defines zero degrees as the freezing point of water and one hundred degrees as the boiling point under standard atmospheric conditions. In contrast, the Fahrenheit scale sets the freezing point of water at 32 degrees and the Kelvin scale starts at absolute zero, with its zero point being 0 Kelvin, which is equivalent to -273.15 degrees Celsius. Therefore, if you’re looking for the temperature scale where zero corresponds to the freezing point of water, Celsius is the right choice.