The system international (S.I.) unit of temperature is:

🧠 Explanation:

The SI unit of temperature is the Kelvin, used in scientific measurements for its absolute scale. Starting at absolute zero (-273.15°C), it avoids negative values, making it ideal for physics and chemistry. Kelvin is critical in fields like thermodynamics, where precise temperature data drives research on heat and energy. Unlike Celsius or Fahrenheit, it’s universally standardized, ensuring consistency in global science. Its adoption reflects the need for accuracy in experiments, from material science to climate studies, supporting advancements in technology and our understanding of the universe’s fundamental properties.