**Core Concept**
Necrotizing cellulitis is a severe infection of the skin and subcutaneous tissue, characterized by rapid progression and potential for life-threatening complications. It often follows a traumatic injury, such as a bite, and requires prompt and aggressive management to prevent further tissue damage and systemic spread.

**Why the Correct Answer is Right**
The ideal initial management of necrotizing cellulitis involves broad-spectrum antibiotics to cover both aerobic and anaerobic bacteria, which are commonly involved in such infections. Antibiotics such as piperacillin-tazobactam or meropenem are often chosen for their effectiveness against a wide range of pathogens. In addition, prompt surgical debridement is essential to remove dead tissue and prevent further infection. This may involve incision and drainage or, in severe cases, amputation.

**Why Each Wrong Option is Incorrect**
**Option A:** This option may be incorrect as it does not address the need for broad-spectrum antibiotics and surgical debridement, which are critical components of initial management.
**Option B:** This option may be incorrect as it does not specify the need for surgical debridement, which is essential for removing dead tissue and preventing further infection.
**Option C:** This option may be incorrect as it does not address the need for broad-spectrum antibiotics, which are necessary to cover both aerobic and anaerobic bacteria.

**Clinical Pearl / High-Yield Fact**
In cases of necrotizing cellulitis, prompt surgical debridement is often more effective than prolonged antibiotic therapy alone, and may be the key to preventing further tissue damage and systemic complications.

**Correct Answer: D. Surgical debridement with broad-spectrum antibiotics.**