**Core Concept**
Hyperkalemia is a condition characterized by elevated potassium levels in the blood, which can lead to cardiac arrhythmias, muscle weakness, and other systemic complications. Managing hyperkalemia often involves administering medications to either shift potassium into cells, remove potassium from the body, or block its effects on the heart.

**Why the Correct Answer is Right**
The treatment of hyperkalemia involves several strategies, including administering medications that promote cellular uptake of potassium (such as insulin and beta-2 agonists), reducing potassium levels through dialysis or diuretics, and blocking potassium channels in the heart with medications like calcium gluconate. Option (A) is likely to be a medication used in hyperkalemia, given the context.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is likely a medication used in hyperkalemia, given the context. For example, **sodium polystyrene sulfonate (Kayexalate)** is a medication that exchanges sodium for potassium in the gastrointestinal tract and is used to treat hyperkalemia.
**Option B:** This option is likely a medication used in hyperkalemia. **Bicarbonate** is sometimes used to treat hyperkalemia by promoting the cellular uptake of potassium.
**Option C:** This option is likely a medication used in hyperkalemia. **Salbutamol (Albuterol)** is a beta-2 agonist that can be used to treat hyperkalemia by promoting the cellular uptake of potassium.

**Clinical Pearl / High-Yield Fact**
It is essential to differentiate between hyperkalemia and hypokalemia when managing electrolyte imbalances. Hypokalemia, characterized by low potassium levels, can lead to muscle weakness, constipation, and cardiac arrhythmias. A key clinical pearl is to remember the "rule of 10" in hyperkalemia: 10 mmol/L potassium level, 10% risk of cardiac arrest, and 10 minutes to initiate treatment.

**Correct Answer: D.**