Small amount of iodine is added to common salt so that

Options

A. Oedema is prevented
B. Common salt is utilised properly in the body
C. Occurrence of goitre is prevented
D. Kidney remains efficient in maintaining water balance.

Answer

**Step-by-Step Solution:**

1. **Understanding the Role of Iodine:**
- Iodine is an essential trace element that is crucial for the synthesis of thyroid hormones, particularly thyroxin (T4). These hormones play a vital role in regulating metabolism and overall growth in the body.

2. **Identifying the Problem:**
- A deficiency of iodine in the diet can lead to insufficient production of thyroxin. This condition can result in hypothyroidism, which is characterized by a low metabolic rate and can lead to various health issues.

3. **Consequences of Iodine Deficiency:**
- One of the most notable consequences of iodine deficiency is the enlargement of the thyroid gland, a condition known as goiter. This occurs as the body attempts to compensate for the lack of thyroid hormones.

4. **Preventive Measure:**
- To prevent goiter and ensure adequate thyroid hormone production, small amounts of iodine are added to common salt. This practice helps to ensure that individuals receive sufficient iodine in their diet.

5. **Conclusion:**
- Therefore, the correct answer to the question is that small amounts of iodine are added to common salt to prevent the occurrence of goiter.

**Final Answer:**
- Small amounts of iodine are added to common salt to prevent the occurrence of goiter.

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