Which electrolyte plays a crucial role in regulating the amount of water in the body and maintaining proper blood pressure?

A Sodium ✓
B Potassium
C Calcium
D Magnesium

Explanation

Sodium helps regulate the amount of water in the body and maintain proper blood pressure by controlling the amount of water in the blood vessels.

Source

Berne and Levy Physiology
Electrolytes and Acid-Base Balance Physiology Electrolyte Regulation Medium MEDICAL Confidence: high