Hypokalemia is a deficiency of which mineral?

• A. Calcium
• B. Potassium
• C. Sodium
• D. Magnesium

Answer: (B)

Verified step by step guidance

1. Understand that hypokalemia is a medical term used to describe a deficiency or low level of a specific mineral in the blood.
2. Break down the word 'hypokalemia': 'hypo-' means low or deficient, and '-kalemia' refers to potassium levels in the blood.
3. Recall the common minerals involved in electrolyte balance: calcium, potassium, sodium, and magnesium.
4. Recognize that hypokalemia specifically refers to a deficiency of potassium, which is essential for muscle function, nerve signaling, and maintaining fluid balance.
5. Therefore, identify potassium as the mineral that is deficient in hypokalemia.