## **Core Concept**
Iodized salt is provided to prevent **goitre**, a condition characterized by the enlargement of the **thyroid gland**, often due to **iodine deficiency**. Iodine is crucial for the synthesis of **thyroid hormones**, which play a vital role in regulating metabolism.

## **Why the Correct Answer is Right**
The correct answer, **population**, is right because iodized salt is given to prevent goitre at a **community or population level**. Iodine deficiency is a public health problem that affects many people, especially in areas where access to iodine-rich foods is limited. Providing iodized salt helps ensure that the general population gets enough iodine to prevent iodine deficiency disorders, including goitre.

## **Why Each Wrong Option is Incorrect**
* **Option A: Individual**: While iodized salt does benefit individuals by preventing goitre, the question seems to focus on the broader application, which is at a population level.
* **Option B: Pregnant women**: Although pregnant women are a critical group that benefits from iodine supplementation to prevent conditions like cretinism and other developmental issues, iodized salt is not exclusively given to them.
* **Option C: Children**: Children also benefit from iodine to prevent developmental delays and cretinism, but again, iodized salt is provided for the broader population.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that **iodine deficiency is the leading cause of preventable mental retardation and developmental delay worldwide**. Universal salt iodization (USI) is a strategy endorsed by the World Health Organization to prevent iodine deficiency disorders.

## **Correct Answer:** . population