## **Core Concept**
The question tests knowledge of dietary sources of potassium, an essential mineral crucial for various bodily functions, including nerve function, muscle contraction, and heart function. Potassium is often found in high amounts in certain types of foods.

## **Why the Correct Answer is Right**
The correct answer includes options that are known to be high in potassium. Green leafy vegetables (a) are rich in potassium, as are bananas (c) and fish (e). These foods are commonly recommended for individuals looking to increase their potassium intake. Potassium helps in lowering blood pressure, reducing the risk of kidney stones, and decreasing bone loss.

## **Why Each Wrong Option is Incorrect**
- **Option B: Milk** - While milk does contain some potassium, it is not as high in potassium as the foods listed in the correct answer. It is more known for its calcium content.
- **Option D: Iodised salt** - Iodised salt is primarily a source of iodine, not potassium. It is used to prevent iodine deficiency disorders, such as goiter.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that patients with **hyperkalemia** (high potassium levels) need to limit their intake of high-potassium foods, while those with **hypokalemia** (low potassium levels) may be advised to increase consumption of such foods. A simple mnemonic to remember high-potassium foods is "BANANA" and thinking of leafy greens.

## **Correct Answer: C. a, c, e.**