**Core Concept:** Burns are classified based on the depth and extent of injury to the skin and underlying tissues. The following classification is commonly used:

1. Superficial First Degree (partial thickness): affects the epidermis and dermis, causing redness, mild pain, and blistering.
2. Deep First Degree (partial thickness): affects the epidermis, dermis, and sometimes the hypodermis, causing blistering, mild to moderate pain, and swelling.
3. Second Degree (full thickness): involves the epidermis, dermis, and hypodermis, leading to extensive blistering, severe pain, and edema.
4. Third Degree (full thickness): involves the entire dermis, subcutaneous fat, and in some cases, the muscles, bones, and joints. It results in complete destruction of skin and underlying tissues, with no sensation or pain.

**Why the Correct Answer is Right:**

The correct answer is **B.** Burns involving more than 10% of body surface area (BSA) are considered significant, and the child's age should be taken into consideration. Given that the child's burn area corresponds to the size of their palm, it is approximately 10% of their total body surface area.

**Why Each Wrong Option is Incorrect:**

A. This option is incorrect because the burn area does not correspond to 10% of the child's BSA, which is required for significant burn classification.
C. This option is incorrect because a burn covering only one palm does not qualify as a significant burn, based on the size criteria.
D. This option is incorrect as the burn area only covers one palm, which is less than 10% of the child's BSA. Although the child's age is a consideration in burn classification, the area of burn is not.

**Clinical Pearl:**

In children, burns should be evaluated based on the percentage of BSA involvement, as well as the depth and severity of the burn. This classification helps guide appropriate management, which may include fluid replacement therapy, pain management, and potential surgical intervention in severe cases. The evaluation of burn size and depth is crucial for determining the child's need for specialized care and monitoring due to the child's immature immune system and increased susceptibility to infection and complications.