Answer:
Kelvin
Step-by-step explanation:
Kelvin is the most suitable for measuring the heat of the sun because it is an absolute temperature scale and does not have a negative range, which makes it convenient for high temperature measurements. The temperature of the sun's surface ranges from about 5,500 to 6,000 K, so it would not be possible to measure it accurately using Celsius or Fahrenheit, which are relative temperature scales with a negative range.
Correct me if I’m wrong.