**Core Concept**
The patient's symptoms suggest obstructive jaundice, a clinical condition characterized by the obstruction of bile flow, leading to the accumulation of bilirubin in the blood and tissues. This results in jaundice, pruritus, and abdominal pain.

**Why the Correct Answer is Right**
The correct diagnosis is likely choledocholithiasis, which is the presence of a gallstone in the common bile duct. The stone obstructs the bile flow, causing the patient's symptoms. The common bile duct is a narrow tube that connects the liver and gallbladder to the small intestine, allowing bile to flow from the liver and gallbladder into the intestine. The presence of a gallstone in this duct can cause a range of symptoms, including jaundice, pruritus, and abdominal pain.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because cholestasis refers to a reduction or stoppage of bile flow, but it does not specify the cause of the obstruction.
**Option B:** This option is incorrect because primary biliary cirrhosis is a chronic liver disease that leads to scarring and cirrhosis, but it does not typically cause sudden obstructive jaundice.
**Option C:** This option is incorrect because pancreatic cancer can cause obstructive jaundice, but it is not the most likely cause in this patient.

**Clinical Pearl / High-Yield Fact**
It's essential to consider the patient's age and sex when evaluating jaundice, as certain conditions are more common in specific populations. For example, primary biliary cirrhosis is more common in women, while primary sclerosing cholangitis is more common in men.

**Correct Answer:** C.