Bent bones are symptom of _________ .

Options

A. rickets
B. scurvy
C. night blindness
D. goitre

Explanation

**Step-by-Step Solution:**

1. **Identify the Symptoms**: The question asks about the symptoms of bent bones. We need to determine which condition is associated with this symptom.

2. **Consider the Options**: The options provided are rickets, scurvy, night blindness, and goiter. We will analyze each option to find the correct one.

3. **Analyze Rickets**: Rickets is known to cause bent bones, particularly in children. It results from a deficiency of vitamin D, which is crucial for bone health. When there is not enough vitamin D, bones can become weak and bend.

4. **Check Other Options**:
- **Scurvy**: This condition is caused by a deficiency of vitamin C and is characterized by symptoms like bleeding gums, not bent bones.
- **Night Blindness**: This is caused by a deficiency of vitamin A and leads to difficulty seeing in low light, not related to bone structure.
- **Goiter**: This condition involves swelling in the neck due to an enlarged thyroid gland, which is unrelated to bone health.

5. **Conclusion**: After analyzing all the options, it is clear that bent bones are a symptom of rickets.

**Final Answer**: Bent bones are a symptom of **rickets**.

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