Which of the following groups of viruses are known to infect the nose and respiratory passage in humans?

Options

A. Retroviruses
B. Echoviruses
C. Rhinoviruses
D. Oncogenic viruses

Answer

To solve the question of which group of viruses are known to infect the nose and respiratory passage in humans, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks which group of viruses specifically infects the nose and respiratory passages in humans. We need to evaluate each option to determine if they are associated with respiratory infections.

2. **Evaluating Option A: Retroviruses**:
- Retroviruses include the Human Immunodeficiency Virus (HIV), which is known to cause Acquired Immunodeficiency Syndrome (AIDS).
- **Conclusion**: HIV primarily affects the immune system and is not known to infect the nose or respiratory tract. Therefore, this option is incorrect.

3. **Evaluating Option B: Echoviruses**:
- Echoviruses are part of the enterovirus family and are primarily associated with gastrointestinal infections.
- **Conclusion**: They do not typically infect the respiratory system. Thus, this option is also incorrect.

4. **Evaluating Option C: Rhinoviruses**:
- Rhinoviruses are well-known for causing the common cold, which directly affects the upper respiratory tract, including the nose.
- **Conclusion**: Since rhinoviruses are specifically linked to respiratory infections, this option is correct.

5. **Evaluating Option D: Oncogenic Viruses**:
- Oncogenic viruses are those that can lead to cancer. They are not associated with respiratory infections.
- **Conclusion**: This option is incorrect as it does not relate to infections of the nose or respiratory tract.

### Final Answer:
The correct answer is **Option C: Rhinoviruses**. They are known to infect the nose and respiratory passages in humans.

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