The question asks for the normal temperature of a human body in Kelvin. Each option provides a potential value for the temperature.

Option 1 suggests a value of 280K. This is too low for the average human body temperature, which is around 37 degrees Celsius.

Option 2 suggests a value of 290K. This is also lower than the average human body temperature, as 290K converts to approximately 16.85 degrees Celsius.

Option 3 suggests a value of 300K. While this is closer to the accurate value, it`s still slightly lower than the actual human body temperature. In Celsius, it translates to around 26.85 degrees.

Option 4 suggests a value of 310K. This value is approximately equivalent to 36.85 degrees Celsius, which is very close to the average human body temperature -- usually stated as 37 degrees Celsius. Therefore, option 4 is correct.

By understanding the conversion between Kelvin and Celsius (C = K - 273.15), you can easily cross-verify the options.