Protective respiratory blast is

Options

A. Hiccupping
B. Coughing
C. Sneezing
D. None of these

Answer

**Step-by-Step Solution:**

1. **Understanding the Question:**
The question asks about what is referred to as a "protective respiratory blast." This indicates that we are looking for a reflex action or response that serves to protect the respiratory system.

2. **Analyzing the Options:**
We have four options to consider:
- A) Hiccuping
- B) Coughing
- C) Sneezing
- D) None of these

3. **Evaluating Option A: Hiccuping:**
- Hiccuping is caused by the contraction of the diaphragm due to irritation in the respiratory tract.
- It is a reflex action but primarily occurs due to irritation rather than serving as a protective mechanism against harmful particles.
- **Conclusion:** Hiccuping is not a protective respiratory blast.

4. **Evaluating Option B: Coughing:**
- Coughing is a reflex action that occurs when there is a blockage in the respiratory tract, such as mucus or foreign particles.
- It serves to clear the airways and remove obstructions, which is a protective function.
- **Conclusion:** Coughing can be considered a protective respiratory action, but it is not typically referred to as a "blast."

5. **Evaluating Option C: Sneezing:**
- Sneezing occurs when irritants or foreign particles enter the nasal passages.
- It is a forceful expulsion of air from the lungs through the nose and mouth, aimed at expelling these irritants.
- This action is indeed protective as it helps prevent harmful substances from entering the respiratory system.
- **Conclusion:** Sneezing is a protective respiratory blast.

6. **Evaluating Option D: None of These:**
- This option suggests that none of the previous options are correct.
- However, since we have identified sneezing as a protective respiratory blast, this option is incorrect.

7. **Final Answer:**
The correct answer is **C) Sneezing**.

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