Select the correct statement

Options

A. There are total 10 pairs of ribs in human body.
B. First seven pairs of ribs are called true ribs.
C. Ribs are attached to backbone in the front and to sternum at the back.
D. Ribs protect the brain and the heart.

Explanation

### Step-by-Step Solution:

1. **Identify the Statements**: We need to analyze the four statements provided to determine which one is correct.

2. **Evaluate the First Statement**: The first statement claims that there are a total of 10 pairs of ribs in the human body. This is incorrect because humans actually have 12 pairs of ribs.

3. **Evaluate the Second Statement**: The second statement says that the first 7 pairs of ribs are called true ribs. This statement is correct because the first 7 pairs of ribs are indeed attached to the sternum, which is the bone located in the center of the chest.

4. **Evaluate the Third Statement**: The third statement mentions that ribs are attached to the backbone in front and the sternum at the back. This is incorrect; ribs are attached to the backbone at the back and the sternum at the front.

5. **Evaluate the Fourth Statement**: The fourth statement claims that ribs protect the brain and heart. This is also incorrect because the brain is protected by the skull, while the ribs primarily protect the heart and lungs.

6. **Conclusion**: After evaluating all the statements, we find that the second statement is the only correct one.

### Final Answer:
The correct statement is: "The first 7 pairs of ribs are called true ribs."

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