Ringworm is caused by fungus
1. Microsporum 2. Trichophyton
3. Rhizopus 4. Oscillatoria

Options

A. 1 and 2
B. 2 and 3
C. 1,3 and 4
D. All of these

Answer

To solve the question about the cause of ringworm, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks which fungus causes ringworm. We have four options: Microsporum, Trichophyton, Rhizopus, and Oscillatoria.

2. **Identify Ringworm**: Ringworm is a fungal infection that affects the skin, leading to rashes and other skin problems. It is a communicable disease that can spread through skin contact with infected individuals, animals, or objects.

3. **Know the Causative Agents**:
- **Microsporum**: This is one of the primary fungi responsible for causing ringworm.
- **Trichophyton**: This is another fungus that can also cause ringworm.
- **Rhizopus**: This fungus is not associated with ringworm; it is typically known for causing bread mold and other types of infections.
- **Oscillatoria**: This is a type of blue-green algae and is not related to fungal infections like ringworm.

4. **Select the Correct Options**: From the information gathered:
- Microsporum (correct)
- Trichophyton (correct)
- Rhizopus (incorrect)
- Oscillatoria (incorrect)

5. **Conclusion**: The correct options that cause ringworm are Microsporum and Trichophyton. Therefore, the answer is options 1 and 2.

### Final Answer:
The correct answer is **1. Microsporum and 2. Trichophyton**.

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