**Core Concept**
Patent vitello-intestinal duct, also known as a Meckel's diverticulum, is a congenital anomaly resulting from the incomplete obliteration of the vitelline duct. This condition can lead to complications such as bleeding, obstruction, and infection.

**Why the Correct Answer is Right**
The preferred treatment for a patent vitello-intestinal duct is surgical resection, typically during the first few years of life. Early surgical intervention is recommended to prevent potential complications and to minimize the risk of future problems. The operation involves removing the Meckel's diverticulum and any associated ectopic tissue, such as gastric mucosa or pancreatic tissue.

**Why Each Wrong Option is Incorrect**
**Option A:** Delaying surgery until later in life may increase the risk of complications and make the procedure more challenging due to potential inflammation or scarring.
**Option B:** Conservative management with antibiotics or supportive care is not sufficient for treating a patent vitello-intestinal duct, as it does not address the underlying anatomical issue.
**Option C:** Observing the patient and monitoring for symptoms may not be appropriate, as the condition can lead to severe complications, such as intestinal obstruction or bleeding.

**Clinical Pearl / High-Yield Fact**
A Meckel's diverticulum is the most common congenital anomaly of the small intestine and is often associated with ectopic tissue, such as gastric mucosa or pancreatic tissue, which can cause complications. A "rule of twos" can help identify patients at risk: 2% of the population has a Meckel's diverticulum, 2 feet from the ileocecal junction, and 2 inches in length.

**Correct Answer: C.**