Match the following list of bioactive substances and their roles.
`{:("Bioactive substance","Role"),((i)"Statin",(A)"Removal of oil stains"),((ii)"CyclosporinA",(B)"Removal of clots from blood vessels"),((iii)"Streptokinase",(C)"Lowering of blood cholesterol"),((iv)"Lipase",(D)"Immuno-suppressive agent"):}`
Choose the correct match.

Options

A. `i-(B),ii-(C),iii-(A),iv-(D)`
B. `i-(D),ii-(B),iii-(A),iv-(C)`
C. `i-(D),ii-(A),iii-(B),iv-(C)`
D. `i-(C),ii-(D),iii-(B),iv-(A)`

Answer

To solve the question of matching bioactive substances with their respective roles, we will analyze each substance and its function step by step.

### Step-by-Step Solution:

1. **Identify the Bioactive Substances:**
- Statin
- Cyclosporin A
- Streptokinase
- Lipase

2. **Analyze Each Substance:**
- **Statin:**
- Statins are chemicals derived from fungi such as *Aspergillus* and *Penicillium*.
- **Role:** They help in lowering blood cholesterol levels.
- **Match:** Statin - (C) Lowering of blood cholesterol.

3. **Next Substance - Cyclosporin A:**
- Cyclosporin A is a drug obtained from the fungus *Trichoderma polysporum*.
- **Role:** It acts as an immunosuppressive agent, which is crucial for organ transplants.
- **Match:** Cyclosporin A - (D) Immuno-suppressive agent.

4. **Third Substance - Streptokinase:**
- Streptokinase is an enzyme derived from the bacterium *Streptococcus*.
- **Role:** It is used to remove clots from blood vessels, particularly in cases of heart attacks.
- **Match:** Streptokinase - (B) Removal of clots from blood vessels.

5. **Last Substance - Lipase:**
- Lipase is an enzyme that helps in the breakdown of fats.
- **Role:** It is used in the removal of oil stains from fabrics.
- **Match:** Lipase - (A) Removal of oil stains.

6. **Final Matches:**
- (i) Statin - (C) Lowering of blood cholesterol
- (ii) Cyclosporin A - (D) Immuno-suppressive agent
- (iii) Streptokinase - (B) Removal of clots from blood vessels
- (iv) Lipase - (A) Removal of oil stains

### Summary of Matches:
- (i) Statin - (C)
- (ii) Cyclosporin A - (D)
- (iii) Streptokinase - (B)
- (iv) Lipase - (A)

### Conclusion:
The correct option that matches the bioactive substances with their roles is **Option D**.