The SI unit of temperature is :

Options

A. degress centigrade
B. kelvin
C. degree celsius
D. degress Fahrenheit

Answer

To determine the SI unit of temperature, we can follow these steps:

### Step 1: Understand the question
The question asks for the SI unit of temperature. We need to identify which of the given options is the correct SI unit.

### Step 2: List the options
The options provided are:
1. Degree Centigrade
2. Kelvin
3. Degree Celsius
4. Degree Fahrenheit

### Step 3: Analyze the options
- **Degree Centigrade**: This is an older term that is often used interchangeably with Degree Celsius, but it is not the official SI unit.
- **Kelvin**: This is the absolute temperature scale and is the official SI unit of temperature.
- **Degree Celsius**: This is a commonly used unit for temperature, but it is not the SI unit.
- **Degree Fahrenheit**: This is a temperature scale used mainly in the United States and is not part of the SI system.

### Step 4: Identify the correct answer
From the analysis, we can see that the only option that is recognized as the SI unit of temperature is **Kelvin**.

### Conclusion
Thus, the correct answer is:
**Option 2: Kelvin**

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