The correct answer is A) 305.5 degrees K. To convert a temperature from Celsius to Kelvin, you simply need to add 273.15 to the Celsius temperature. 32.5 degrees Celsius + 273.15 = 305.5 degrees Kelvin. The other answer choices are incorrect because they do not properly convert the Celsius temperature to Kelvin using the formula of adding 273.15. For example, 240.5 degrees K is too low, 492.5 degrees K is too high, and 427.5 degrees K is also incorrect.