Largest reservoir of sulphur is :

Options

A. Atmosphere
B. Rocks
C. Oceam
D. Lake

Answer

To answer the question regarding the largest reservoir of sulfur, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the largest reservoir of sulfur. This means we need to identify where sulfur is predominantly found in the environment.

2. **Identify Possible Reservoirs**: Sulfur can be found in various forms and locations, including the atmosphere, oceans, and geological formations. However, we need to focus on the largest reservoir.

3. **Research Geological Sources**: Upon examining geological sources, we find that sulfur is primarily stored in rocks. This includes various types of rocks that contain sulfur compounds.

4. **Specific Forms of Sulfur in Rocks**: In rocks, sulfur is often found in the form of iron pyrites (FeS2), as well as in other minerals such as calcium and magnesium carbonates. These minerals are significant contributors to the sulfur content in geological formations.

5. **Conclusion**: Based on the information gathered, we can conclude that the largest reservoir of sulfur is found in rocks.

### Final Answer:
The largest reservoir of sulfur is **rocks**.

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