Cretinism can be prevented or cured by the administration of

Options

A. Renin
B. Aldosterone
C. Glucagon
D. Thyroxine

Answer

### Step-by-Step Solution:

1. **Understanding Cretinism**:
- Cretinism is a congenital condition characterized by stunted growth and mental retardation in children. It is primarily caused by a deficiency in thyroid hormones.

2. **Identifying the Cause**:
- The root cause of cretinism is the hyposecretion (low secretion) of thyroid hormones, specifically thyroxine (T4) and triiodothyronine (T3). These hormones are crucial for normal growth and development.

3. **Treatment Options**:
- To prevent or cure cretinism, it is essential to address the deficiency of thyroxine. The administration of thyroxine can help in managing the symptoms and preventing the condition from worsening.

4. **Administration of Thyroxine**:
- Thyroxine can be administered in the form of pills, commonly known as levothyroxine. This medication can be mixed with milk or water and given to the child using a syringe or dropper.

5. **Conclusion**:
- Therefore, the correct answer to the question is that cretinism can be prevented or cured by the administration of **thyroxine**.