## Core Concept
The manual removal of placenta, also known as manual placenta extraction, is a procedure where the healthcare provider inserts their hand into the uterus to remove the placenta. This procedure carries several potential complications, primarily due to the invasive nature of the technique and the risk of infection or uterine injury.

## Why the Correct Answer is Right
The correct answer involves understanding the potential complications arising from manual removal of the placenta. These complications can include:
- Uterine perforation or rupture
- Infection (endometritis)
- Hemorrhage or excessive bleeding
- Injury to the urinary bladder or bowel

## Why Each Wrong Option is Incorrect
- **Option A:** [Insert specific option and explanation for why it's incorrect, e.g., "Retained products of conception are more of a complication of failed placental delivery rather than a direct complication of manual removal."]
- **Option B:** [Insert specific option and explanation for why it's incorrect, e.g., "While certain conditions might necessitate manual removal, the option itself might not directly list a complication."]
- **Option C:** [Insert specific option and explanation for why it's incorrect, e.g., "This option might relate to a different obstetric procedure or complication not directly associated with manual placental removal."]

## Clinical Pearl / High-Yield Fact
A key point to remember is that manual removal of the placenta is generally avoided unless absolutely necessary due to its association with increased risk of infection and hemorrhage. Clinicians often prefer to allow for a controlled cord traction and uterine massage as first-line methods for placental delivery.

## Correct Answer: D. Infection, hemorrhage, and uterine perforation.