Match different organisms in column I with their uses in column I and select the correct answer from the given codes.
`{:(Column I, Column II),(A."Lactobacillus acidophilus",(i)"Formation of dough"),(B."Saccharomyces cerevisiae",(ii)"Single cell proteins"),(C. "Propionibacterium shermanii",(iii)"Conversion of milk into curd"),(D."Spirullina",(iv)"Formation of Swiss cheese"):}`

Options

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

Answer

To solve the question of matching different organisms in Column I with their uses in Column II, we will analyze each organism and its corresponding use step by step.

### Step-by-Step Solution:

1. **Identify Organism A: Lactobacillus acidophilus**
- **Use:** This organism is known for its role in the fermentation of milk to produce yogurt or curd.
- **Match:** (A) "Lactobacillus acidophilus" → (iii) "Conversion of milk into curd"

2. **Identify Organism B: Saccharomyces cerevisiae**
- **Use:** This yeast is primarily used in baking and brewing, particularly for the formation of dough and fermentation of bread.
- **Match:** (B) "Saccharomyces cerevisiae" → (i) "Formation of dough"

3. **Identify Organism C: Propionibacterium shermanii**
- **Use:** This bacterium is used in the production of Swiss cheese, where it helps in the fermentation process and contributes to the characteristic holes in the cheese.
- **Match:** (C) "Propionibacterium shermanii" → (iv) "Formation of Swiss cheese"

4. **Identify Organism D: Spirulina**
- **Use:** Spirulina is a type of blue-green algae that is considered a source of single-cell protein, which is used as a dietary supplement.
- **Match:** (D) "Spirulina" → (ii) "Single cell proteins"

### Summary of Matches:
- (A) "Lactobacillus acidophilus" → (iii) "Conversion of milk into curd"
- (B) "Saccharomyces cerevisiae" → (i) "Formation of dough"
- (C) "Propionibacterium shermanii" → (iv) "Formation of Swiss cheese"
- (D) "Spirulina" → (ii) "Single cell proteins"

### Final Answer:
Based on the matches, the correct option is:
- **Option B:** A-iii, B-i, C-iv, D-ii

---