**Core Concept**
The removal of common bile duct (CBD) stones requires a procedure that balances efficacy, safety, and minimally invasive approach. Endoscopic techniques have revolutionized the management of CBD stones, offering a less invasive alternative to traditional surgical methods.

**Why the Correct Answer is Right**
Endoscopic retrograde cholangiopancreatography (ERCP) is the procedure of choice for elective removal of CBD stones. ERCP involves the insertion of an endoscope through the mouth, allowing for direct visualization of the bile ducts and stones. Using this technique, a sphincterotomy can be performed to remove the stone, and a stent may be placed to ensure patency of the bile duct. The success rate of ERCP is high, with a low risk of complications when performed by experienced hands.

**Why Each Wrong Option is Incorrect**
**Option A:** Laparoscopic cholecystectomy is a surgical procedure that may be used for the removal of gallbladder stones, but it is not the preferred method for CBD stone removal. This option is incorrect because it does not address the specific issue of CBD stones.

**Option B:** Magnetic resonance cholangiopancreatography (MRCP) is a diagnostic imaging technique that can help identify CBD stones, but it is not a therapeutic procedure. This option is incorrect because it does not provide a solution for the removal of CBD stones.

**Option C:** Percutaneous transhepatic cholangiography (PTC) is a procedure that involves injecting contrast material into the bile ducts through the skin. While PTC can be used to diagnose and treat CBD stones, it is generally reserved for cases where ERCP is not feasible. This option is incorrect because it is not the preferred initial approach for elective CBD stone removal.

**Clinical Pearl / High-Yield Fact**
ERCP is a highly effective procedure for CBD stone removal, but it carries a risk of complications, including pancreatitis, bleeding, and infection. To minimize these risks, ERCP should only be performed by experienced endoscopists in a hospital setting with adequate facilities for emergency management.

**Correct Answer: C. ERCP is the preferred procedure for elective removal of CBD stones.**