A viral disease known from prehistoric times is

Options

A. Pneumonia
B. Small Pox
C. Poliomyelitis
D. Both B and C.

Answer

**Step-by-Step Solution:**

1. **Understanding Viral Diseases**:
- A viral disease is any disease caused by a virus. Viruses are microscopic pathogens that can infect living organisms, leading to various health issues.

2. **Defining Prehistoric Time**:
- Prehistoric time refers to the period before written records, often associated with the Stone Age. This era is characterized by early human development and the emergence of various diseases.

3. **Identifying Viral Diseases from Prehistoric Times**:
- The question specifically asks for a viral disease known from prehistoric times.

4. **Considering Smallpox**:
- Smallpox is one of the oldest known viral diseases. It is believed to have infected humans for thousands of years, with evidence suggesting its presence in ancient civilizations.

5. **Considering Poliomyelitis (Polio)**:
- Polio, also known as poliomyelitis, is another viral disease that has affected humans for a long time. Historical evidence indicates that polio has been present for centuries.

6. **Evaluating the Options**:
- The question likely provides multiple-choice options, including smallpox and polio. Based on historical evidence, both diseases can be considered as viral diseases known from prehistoric times.

7. **Conclusion**:
- The correct answer to the question is that both smallpox and poliomyelitis are viral diseases known from prehistoric times. Therefore, if the options include both B (smallpox) and C (polio), the correct answer would be option D (both B and C).