Step 1: Role of Sodium in the Body.
Sodium is an essential electrolyte in the body, responsible for maintaining fluid balance, transmitting nerve signals, and regulating blood pressure. The primary source of sodium in our diet is salt (sodium chloride).
Step 2: Why Salt is the Best Source.
Salt, or sodium chloride, is the most common and direct source of sodium in the human diet. It is used in cooking and as a preservative.
Step 3: Why Other Options are Incorrect.
- (A) Jaggery: Jaggery is a form of sugar and contains negligible amounts of sodium.
- (C) Lemon: Lemons are rich in Vitamin C but contain very little sodium.
- (D) Turmeric: Turmeric contains minimal sodium, primarily being a source of antioxidants and anti-inflammatory compounds.
Step 4: Conclusion.
Salt (option B) is the best source of sodium, making it the correct answer.