There is national eradication programme for a disease caused by the deficiency of an element

Options

A. Iodine
B. Boron
C. Copper
D. Chlorine

Answer

### Step-by-Step Solution:

1. **Identify the Disease and Element**: The question mentions a national eradication program for a disease caused by the deficiency of an element. We need to identify which element is associated with a significant health issue.

2. **Analyze the Options**: The options provided are Iodine, Boron, Copper, and Chlorine. We need to evaluate each option based on known health issues related to their deficiencies.

3. **Research Iodine Deficiency**: Iodine is a trace mineral essential for the production of thyroid hormones. A deficiency in iodine can lead to several health issues, including goiter (enlargement of the thyroid gland), cretinism (severe mental and physical developmental delays), hypothyroidism, and other complications such as abortions and stillbirths.

4. **Global Impact of Iodine Deficiency**: Iodine deficiency is recognized as the single largest cause of preventable brain damage globally. This highlights the severity of the issue and the need for a national eradication program.

5. **Conclusion**: Given the information, it is clear that the national eradication program is aimed at addressing iodine deficiency disorders. Therefore, the correct answer is **Iodine**.

### Final Answer:
The correct option is **Iodine**.

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