What is the conversion between Celsius and Kelvin at absolute zero?

At absolute zero, the temperature in Celsius is -273.15 °C, and in Kelvin, it is 0 K. The Kelvin scale is an absolute temperature scale where 0 K represents the lowest possible temperature, indicating a complete absence of thermal energy.

The conversion between Celsius and Kelvin is achieved through the formula:

[ K = C + 273.15 ]

This means that to convert a temperature from Celsius to Kelvin, you add 273.15. Therefore, when considering 0 °C as a reference point, the conversion yields:

[ K = 0 + 273.15 = 273.15 ]

This establishes that 0 °C correlates to 273.15 K, making option C the correct representation of the relationship between the Celsius and Kelvin scales.