**Core Concept**
Congenital Talipes Equinovarus (CTEV), also known as clubfoot, is a congenital deformity of the foot and ankle that requires early intervention to correct. The Ponseti method is a widely accepted treatment approach for CTEV, which involves a combination of manipulation, casting, and surgical intervention.

**Why the Correct Answer is Right**
The Ponseti method involves a series of manipulations and castings to gradually correct the deformity. The process typically takes 4-6 weeks, during which the foot is manipulated and casted in a specific position to gradually correct the deformity. The goal is to achieve a plantigrade foot, which is a foot that is flat on the ground. The Ponseti method has been shown to be effective in correcting CTEV in over 90% of cases, with minimal risk of complications.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because the Pavlik harness is used to treat developmental dysplasia of the hip, not CTEV.
**Option B:** This option is incorrect because serial casting alone is not sufficient to correct CTEV, as it may not fully address the underlying muscle imbalances and joint deformities.
**Option C:** This option is incorrect because surgical intervention is typically reserved for cases where the Ponseti method is unsuccessful or if the deformity is severe, and is not the primary treatment for CTEV.

**Clinical Pearl / High-Yield Fact**
The key to successful treatment of CTEV is early intervention, typically within the first few weeks of life. Delays in treatment can lead to persistent deformity and increased risk of complications, making it essential to identify and treat CTEV promptly.

**Correct Answer:** C.