Which temperature scales have exactly 100 degrees between the freezing point and the boiling point of water?

The Celsius scale is defined such that the freezing point of water is 0 degrees and the boiling point is 100 degrees, giving it an interval of exactly 100 degrees between these two key temperature points.

The Kelvin scale, on the other hand, is an absolute temperature scale that begins at absolute zero. It defines the freezing point of water at 273.15 K and the boiling point at 373.15 K, resulting in a difference of 100 degrees as well when calculated in Kelvin.

Thus, both the Celsius and Kelvin scales feature an interval of 100 degrees between the freezing and boiling points of water. This characteristic makes the correct answer a choice that includes Celsius and Kelvin.