Step 1: Decide the question is really about coverage and location.
The four neonatal anterior-wall anomalies are best separated by two questions: is the defect at the umbilicus or below it, and is the exposed organ bowel or bladder, covered by a sac or bare? Working through those two axes identifies the lesion shown.
Step 2: Profile each option.
• Omphalocele → midline UMBILICAL defect; abdominal viscera herniate through the cord base but remain enclosed in a peritoneal/amniotic SAC.
• Gastroschisis → defect to the RIGHT of the umbilicus; BOWEL extrudes with NO covering membrane.
• Patent vitello-intestinal duct → persistent omphalomesenteric connection presenting as umbilical discharge/fistula, not a large exposed organ.
• Exstrophy of the bladder → a LOWER abdominal-wall defect in which the posterior bladder wall is everted and the bladder mucosa lies open and exposed on the abdominal surface, with no protective sac.
Step 3: Match to the depicted lesion.
An exposed, bare mucosal surface presenting low on the abdomen - bladder tissue turned inside-out and visible rather than herniated bowel in a sac - corresponds to bladder exstrophy. It is neither the sac-covered umbilical mass of omphalocele nor the uncovered loops of gastroschisis.
Final answer: The anomaly depicted is Exstrophy bladder (Option 4).