**Core Concept**
Hyperkalemia is a condition characterized by elevated serum potassium levels, which can lead to cardiac arrhythmias, muscle weakness, and respiratory failure. Treatment aims to shift potassium into cells, reduce potassium levels, or eliminate potassium from the body.

**Why the Correct Answer is Right**
Treatment options for hyperkalemia involve shifting potassium into cells, eliminating potassium from the body, or stabilizing cardiac membranes. **Calcium gluconate** is used to stabilize cardiac membranes, **sodium bicarbonate** helps shift potassium into cells by increasing intracellular pH, and **insulin and glucose** also facilitate potassium uptake into cells. **Beta-2 agonists**, such as albuterol, can also help shift potassium into cells.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it would worsen hyperkalemia. Administering potassium supplements directly increases serum potassium levels.
**Option B:** This option is incorrect because it is not a standard treatment for hyperkalemia. Although potassium exchange resins like sodium polystyrene sulfonate can help eliminate potassium from the body, they are not typically used in acute management.
**Option C:** This option is incorrect because it is not a primary treatment for hyperkalemia. While potassium-lowering diuretics like spironolactone can help reduce potassium levels, they are not the first line of treatment in acute hyperkalemia.

**Clinical Pearl / High-Yield Fact**
In the treatment of hyperkalemia, it is essential to remember the sequence of administration: **calcium gluconate** for cardiac stability, followed by **insulin and glucose** to shift potassium into cells, and finally **sodium bicarbonate** to further facilitate potassium uptake.

**Correct Answer: A. Potassium supplements.**