**Core Concept**
Re-epithelialization is the process of wound healing where the epithelial cells regenerate and cover the damaged area. In second-degree burns, the epidermis is partially destroyed, but the dermal-epidermal junction remains intact, allowing for re-epithelialization.

**Why the Correct Answer is Right**
Re-epithelialization in second-degree burns occurs around the wound edges, where the intact dermal-epidermal junction provides a scaffold for epithelial cell migration and proliferation. This process is facilitated by the presence of growth factors, such as EGF and FGF, which promote cell growth and differentiation. The wound edges act as a reservoir for epithelial cells, which migrate and cover the denuded area.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because re-epithelialization does not occur in third-degree burns, where the entire dermis is destroyed, and the wound is more likely to require grafting.
**Option B:** This option is incorrect because re-epithelialization is not limited to the center of the wound in second-degree burns; it occurs around the wound edges.
**Option C:** This option is incorrect because re-epithelialization is not a characteristic of first-degree burns, where only the epidermis is affected, and the healing process is primarily through regeneration of damaged cells.

**Clinical Pearl / High-Yield Fact**
Re-epithelialization is a dynamic process that occurs within 3-7 days after injury, and its rate is influenced by factors such as wound size, depth, and the presence of infection or trauma.

**Correct Answer: C. The wound edges.**