Master Manor Preboards Module 1 - Ace the 2026 Practice Test Adventure!

To convert Celsius to Kelvin, you add 273.15 because Kelvin and Celsius have the same size of degree, but Kelvin starts at absolute zero. So 0 degrees Celsius equals 0 + 273.15 = 273.15 Kelvin. In practice, we round to the nearest whole Kelvin, giving 273 K. That matches the stated choice. The other options don’t fit: 0 K would be absolute zero, not 0 C; 273 C would be a Celsius temperature of 273 degrees, not a Kelvin value; 0 C is simply the Celsius measure, not Kelvin.