Select the correctly matched pair.

Options

A. Geotrichum candidum - Commercial source of protease.
B. Shakti and Protina - Lysine rich rice varieties.
C. Cottage cheese - Propionibacterium sharmanii
D. HD1553 variety-Sonalika.

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks us to select the correctly matched pair from the given options. Each option consists of a name and its corresponding description or classification.

2. **Analyzing Option 1**: The first option is "Geotrichum candidum, commercial source of protease."
- **Evaluation**: Geotrichum candidum is a fungus used in cheese making, particularly for surface-ripened cheeses. It is not primarily known as a commercial source of protease.
- **Conclusion**: This option is incorrect.

3. **Analyzing Option 2**: The second option is "Shakti and Protina, Lysine rich rice varieties."
- **Evaluation**: Shakti and Protina are actually maize plant varieties, not rice. While they are known to be lysine-rich, they do not belong to rice varieties.
- **Conclusion**: This option is also incorrect.

4. **Analyzing Option 3**: The third option is "Cotton Cheese with Propionibacterium sharmani."
- **Evaluation**: Propionibacterium sharmani is indeed involved in cheese production, but it is specifically used in Swiss cheese, not in the making of cottage cheese. Cottage cheese is made through different bacterial processes.
- **Conclusion**: This option is incorrect.

5. **Analyzing Option 4**: The fourth option is "HD 1553 variety with Sonalica."
- **Evaluation**: Sonalika is a well-known high-yielding variety of wheat, and HD 1553 is also a recognized variety of wheat. Therefore, this pairing is correct.
- **Conclusion**: This option is correct.

6. **Final Selection**: Based on the analysis, the correctly matched pair is option number 4: "HD 1553 variety with Sonalica."

### Final Answer:
The correctly matched pair is **Option 4: HD 1553 variety with Sonalica**.

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