The product of Monascus purpureus has been commercialised as

Options

A. Immunosuppressive agent
B. Blood - cholesterol lowering agent
C. Clot buster
D. Bottled juices clarifying agents

Explanation

**Step-by-Step Solution:**

1. **Identify the Organism**: The question asks about the product of Monascus purpureus. This organism is a type of fungus.

2. **Understand the Product**: Monascus purpureus is known for producing a compound called statins. Statins are a class of drugs that are used to lower cholesterol levels in the blood.

3. **Mechanism of Action**: Statins work by competitively inhibiting an enzyme that is crucial for the synthesis of cholesterol in the body. This inhibition leads to a decrease in cholesterol production, which in turn lowers blood cholesterol levels.

4. **Determine the Commercial Use**: Given that statins are primarily used for lowering blood cholesterol, the commercialized product of Monascus purpureus is best described as a blood cholesterol-lowering agent.

5. **Evaluate Other Options**: The question may provide other options, such as immunosuppressive agents, clot busters, or clarifying agents. However, these do not relate to Monascus purpureus. Immunosuppressive agents are typically derived from other fungi, clot busters like streptokinase come from bacteria, and clarifying agents are enzymes used in juice production.

6. **Conclusion**: Therefore, the correct answer to the question is that the product of Monascus purpureus has been commercialized as a blood cholesterol-lowering agent.

**Final Answer**: Blood cholesterol-lowering agent.

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