There are ......... chambers in the heart of man.

Options

A. one
B. two
C. three
D. four

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks how many chambers are present in the heart of a human being.

2. **Identifying the Heart Structure**: The human heart is known to be a four-chambered organ. This means it consists of four distinct parts.

3. **Naming the Chambers**: The four chambers of the human heart are:
- Right Atrium
- Right Ventricle
- Left Atrium
- Left Ventricle

4. **Counting the Chambers**: When we count these chambers, we find:
- 1 Right Atrium
- 1 Right Ventricle
- 1 Left Atrium
- 1 Left Ventricle

This totals to 4 chambers.

5. **Conclusion**: Therefore, the answer to the question is that there are **4 chambers in the heart of man**.

**Final Answer**: 4 chambers

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