Which statement about electrolytes and fluid balance is true?

Which statement about electrolytes and fluid balance is true?

• A. Electrolytes such as sodium, potassium, and chloride help maintain fluid distribution and electrical neutrality; sources include fruits, vegetables, dairy, meats, and salt.
• B. Electrolytes are only needed during intense exercise; sources are sports drinks.
• C. Electrolytes have no role in fluid balance.
• D. Electrolytes are obtained only from supplements.

Answer: (A)