**Core Concept**
Lactated Ringer's solution is the medium of choice in burns management due to its optimal electrolyte composition and pH level, which helps to maintain vascular tonus, prevent shock, and support the healing process.

**Why the Correct Answer is Right**
Lactated Ringer's solution contains sodium chloride, sodium lactate, calcium chloride, and potassium chloride, which help to restore the body's fluid and electrolyte balance. The lactate in the solution acts as a buffer, maintaining a stable pH level and preventing metabolic acidosis. This is particularly important in burn patients, who often experience significant fluid loss and electrolyte imbalances. The solution is also isotonic, which means it has the same concentration of solutes as blood, making it safe for rapid administration.

**Why Each Wrong Option is Incorrect**
**Option A:** Normal saline is not the medium of choice for burns management because it lacks the beneficial effects of lactate as a buffer and can lead to hyperchloremic acidosis.
**Option B:** D5W (5% dextrose in water) is not suitable for burns management because it does not provide the necessary electrolytes and can lead to hyperglycemia.
**Option C:** NS/0.9% saline is not the medium of choice for burns management because it lacks the beneficial effects of lactate as a buffer and can lead to hyperchloremic acidosis.

**Clinical Pearl / High-Yield Fact**
In burns management, the Parkland formula is used to calculate the total amount of fluid required for resuscitation: 4 mL/kg/% total body surface area (TBSA) burned. Half of this amount is administered in the first 8 hours, and the remaining half is administered over the next 16 hours.

**Correct Answer:** C. Lactated Ringer's solution.