In rehydration treatment, what is the composition of the solution used?

• A. It uses deionized water acidified with citric acid to a pH near 3.5
• B. It uses plain tap water
• C. It uses sugar solution
• D. It uses alcohol

Answer: (B)

The key idea is that rehydration aims to quickly restore fluid volume with a safe, readily available option. Plain tap water provides pure fluid without introducing extra substances that could complicate balance in the immediate moment. The other choices bring elements that aren’t appropriate for rehydration: acidified deionized water would be harsh on the stomach and lacks electrolytes; a sugar solution without electrolytes won’t replace salts the body has lost and can worsen imbalance; alcohol acts as a diuretic and actually promotes fluid loss. In many basic care situations, plain water is the simplest, safest fluid to begin rehydration, with electrolyte-containing solutions used when available for more complete replacement.