Match the disease in Column I with the appropriate items
(vector/ pathogen/ diagnostic test/ treatment) in Column II
`{:(,"Column - I",,"Column - II"),(a.,"Ringworm",i.,"Aedes"),(b.,"Ascariasis",ii.,"Widal test "),(c.,"Dengue",iii.,"Blockage of the intestinal passage"),(d.,"Typhoid",iv.,"Trichophyton"):}`

Options

A. a-(iv) ,b-(iii), c-(i), d- (ii)
B. a-(ii) ,b-(iii), c-(i), d- (iv)
C. a-(iv) ,b-(i), c-(ii), d- (iii)
D. a-(i) ,b-(ii), c-(iii), d- (iv)

Answer

To solve the matching question, we need to identify the correct associations between diseases in Column I and their corresponding items in Column II. Let's go through each disease one by one.

### Step-by-Step Solution:

1. **Ringworm**:
- **Identification**: Ringworm is a fungal infection.
- **Pathogen**: The pathogen responsible for ringworm is a fungus from the genus **Trichophyton**.
- **Match**: Therefore, Ringworm (a) matches with **Trichophyton (iv)**.

2. **Ascariasis**:
- **Identification**: Ascariasis is caused by a parasitic worm (Ascaris lumbricoides) that can cause blockage in the intestinal passage.
- **Effect**: The blockage of the intestinal passage is a key characteristic of this disease.
- **Match**: Thus, Ascariasis (b) matches with **Blockage of the intestinal passage (iii)**.

3. **Dengue**:
- **Identification**: Dengue is a viral infection transmitted by mosquitoes.
- **Vector**: The primary vector for Dengue is the **Aedes** mosquito (specifically Aedes aegypti).
- **Match**: Hence, Dengue (c) matches with **Aedes (i)**.

4. **Typhoid**:
- **Identification**: Typhoid fever is caused by the bacterium Salmonella typhi.
- **Diagnostic Test**: The Widal test is commonly used to diagnose typhoid fever.
- **Match**: Therefore, Typhoid (d) matches with **Widal test (ii)**.

### Final Matches:
- a. Ringworm → iv. Trichophyton
- b. Ascariasis → iii. Blockage of the intestinal passage
- c. Dengue → i. Aedes
- d. Typhoid → ii. Widal test

### Summary of Matches:
- **Option A**: a → iv
- **Option B**: b → iii
- **Option C**: c → i
- **Option D**: d → ii

### Correct Answer:
The correct answer is:
- a → iv
- b → iii
- c → i
- d → ii