## **Core Concept**
The patient presents with symptoms of diabetic ketoacidosis (DKA), a serious complication of diabetes characterized by hyperglycemia, metabolic acidosis, and increased ketone bodies. DKA management involves fluid replacement, insulin therapy, and electrolyte management.

## **Why the Correct Answer is Right**
The correct approach in managing DKA includes administering intravenous fluids to correct dehydration and electrolyte imbalances, and providing insulin to lower blood glucose levels. Given the patient's low potassium level (3 mEq/L), it's crucial to replenish potassium while also addressing the acidosis and hyperglycemia. The administration of **insulin and potassium** along with fluids is critical. However, insulin should not be started until the potassium level is >3.3 mEq/L to avoid further decreasing potassium levels.

## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is not provided, but typically incorrect options might not address the immediate need for fluid resuscitation, insulin, and potassium replenishment in DKA management.
- **Option B:** Similarly, without specifics, if an option does not include the administration of insulin and potassium in the context of fluid replacement, it would be incorrect.
- **Option D:** Without details, if an option suggests treatments not aligned with DKA management protocols, such as not addressing potassium levels or not considering fluid replacement, it would be incorrect.

## **Clinical Pearl / High-Yield Fact**
A key point to remember in DKA management is the importance of **not administering insulin until the serum potassium level is >3.3 mEq/L**. This is because insulin can drive potassium into cells, potentially worsening hypokalemia. Also, remember that **fluid replacement** is the first step, often with isotonic saline, and **potassium chloride** is added to the fluids if the potassium level is low.

## **Correct Answer:** C.