**Core Concept**
The initial management of sepsis in a pediatric patient involves the administration of fluids to restore circulatory volume and maintain tissue perfusion. The choice of fluid is critical, as it can affect the outcome of the patient.

**Why the Correct Answer is Right**
In pediatric patients, the initial fluid of choice for sepsis is crystalloid solution, specifically normal saline. This is because crystalloids are cheap, easily available, and can be administered rapidly to restore circulatory volume. The goal is to administer 20 mL/kg of fluid bolus over 5-10 minutes, followed by maintenance fluids. The choice of crystalloid over colloid is based on the fact that crystalloids are more effective in expanding intravascular volume and improving cardiac output.

**Why Each Wrong Option is Incorrect**
* **Option A:** Blood transfusion is not the initial fluid of choice for sepsis. While blood transfusions may be necessary in cases of severe anemia or hemorrhage, they are not the first line of treatment for sepsis.
* **Option B:** Colloids, such as albumin, are not recommended as the initial fluid of choice for sepsis. Colloids may be used in specific situations, such as severe burns or liver disease, but they are not the preferred choice for sepsis.
* **Option C:** Hypertonic saline is not typically used as the initial fluid of choice for sepsis. While it may be used in specific situations, such as cerebral edema or severe hyponatremia, it is not the preferred choice for sepsis.

**Clinical Pearl / High-Yield Fact**
In pediatric patients with sepsis, the key is to administer fluids rapidly to restore circulatory volume and maintain tissue perfusion. The goal is to administer 20 mL/kg of fluid bolus over 5-10 minutes, followed by maintenance fluids.

**Correct Answer: D. Normal Saline**