**Core Concept**
Intravenous resuscitation is required in children with severe burns to maintain fluid balance, prevent shock, and promote wound healing. The goal is to administer adequate fluids to replace lost volume and maintain perfusion of vital organs. The Parkland formula is commonly used to guide fluid resuscitation in burn patients.

**Why the Correct Answer is Right**
The American Burn Association recommends intravenous resuscitation for children with burns covering more than 10% of their total body surface area (TBSA). This is because burns over 10% TBSA can lead to significant fluid loss due to edema and capillary damage. The Parkland formula calculates the total fluid requirements based on the child's weight and the percentage of TBSA burned. Administering inadequate fluids can result in hypovolemic shock, while excessive fluids can lead to fluid overload and other complications.

**Why Each Wrong Option is Incorrect**
**Option A:** 5% TBSA is considered a minor burn in children, and intravenous resuscitation is not typically required.
**Option B:** 8% TBSA may require some fluid replacement, but it is not generally considered a criterion for intravenous resuscitation.

**Clinical Pearl / High-Yield Fact**
Remember the "Rule of Nines" to estimate the percentage of TBSA burned: head and neck (9%), each arm (9%), chest (9%), abdomen (9%), back (18%), each leg (18%), and genitalia (1%). This can help guide fluid resuscitation and other burn management decisions.

**Correct Answer: D. 10%**