One degree Celsius indicates the same temperature change as

A. 5/9 degree Fahrenheit.

B. one kelvin.

C. 9/5 kelvin.

D. one degree Fahrenheit.

The correct answer is one kelvin!

Kelvin and Celcius are very similar, with the difference that Kelvin starts at absolute 0 - which means that it has no negative values.

but one degree change in Celsius is equal to one degree change in kelvin!