Ringworm in humans is caused by

Options

A. bacteria
B. fungi
C. nematodes
D. viruses

Answer

**Step-by-Step Solution:**

1. **Understand the Question**: The question asks about the causative agent of ringworm in humans. We need to identify whether it is caused by bacteria, fungi, nematodes, or viruses.

2. **Define Ringworm**: Ringworm is a skin infection characterized by dry, itchy lesions. It is contagious and commonly spreads through direct contact or sharing personal items like clothes and towels.

3. **Identify the Options**: The options given are:
- A. Bacteria
- B. Fungi
- C. Nematodes
- D. Viruses

4. **Analyze Each Option**:
- **A. Bacteria**: While bacteria can cause skin infections, they are not responsible for ringworm.
- **B. Fungi**: Ringworm is known to be caused by fungal infections, specifically by fungi such as Microsporum and Epidermophyton.
- **C. Nematodes**: These are roundworms and are not associated with skin infections like ringworm.
- **D. Viruses**: Viruses can cause various diseases but are not responsible for ringworm.

5. **Conclusion**: Based on the analysis, the correct answer is option B, fungi, as they are the causative agents of ringworm in humans.

**Final Answer**: Ringworm in humans is caused by **Fungi** (Option B).

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