**Core Concept**
The peritoneal recesses are anatomical spaces within the peritoneal cavity that can be found in the abdominal region. These recesses are formed by the peritoneal folds that separate the abdominal organs from each other and from the abdominal wall. In infants, some of these recesses are more prominent due to the relatively small size of the abdominal cavity and the presence of certain anatomical features.

**Why the Correct Answer is Right**
The correct answer is the **foramen of Winslow**. The foramen of Winslow, also known as the epiploic foramen, is a peritoneal recess that is constantly present in infants. It is formed by the liver, the stomach, and the colon. As the child grows and develops, the foramen of Winslow usually disappears due to the increasing size of the liver and the movement of the stomach and colon.

**Why Each Wrong Option is Incorrect**
* **Option A:** The **rectovesical pouch** is a peritoneal recess that is present in adults but may not be as prominent in infants.
* **Option B:** The **rectouterine pouch** is a peritoneal recess that is present in females but not typically considered to be one of the recesses that disappear with age in infants.
* **Option C:** The **omental bursa** is a peritoneal recess that is present in adults and is associated with the omentum, but it is not typically considered to be one of the recesses that disappear with age in infants.

**Clinical Pearl / High-Yield Fact**
The peritoneal recesses can be an important consideration in surgical procedures, particularly in the context of abdominal surgery. A thorough understanding of the peritoneal recesses can help surgeons avoid injuries to these areas and minimize the risk of complications.

**Correct Answer:** D.