**Core Concept**
Burking is a form of homicide characterized by the intentional deprivation of oxygen, leading to asphyxial death. This method often involves applying pressure to the chest or abdomen, obstructing the victim's ability to breathe.

**Why the Correct Answer is Right**
Traumatic asphyxia, also known as Burking, occurs when external pressure is applied to the chest or abdomen, causing the diaphragm to be compressed and preventing the lungs from expanding. This compression of the chest cavity leads to a decrease in venous return to the heart, resulting in cerebral hypoxia and ultimately, death. The mechanism of death in Burking is distinct from other forms of asphyxia, such as choking, which involves obstruction of the airway, and ligature strangulation, which involves compression of the neck.

**Why Each Wrong Option is Incorrect**
**Option A:** Choking refers to the obstruction of the airway by a foreign object, which is a different mechanism of asphyxial death.
**Option B:** Ligature refers to strangulation by a cord or rope, which involves compression of the neck and is not the same as Burking.
**Option C:** Overlaying, also known as smothering, involves the intentional or accidental placement of a heavy object on a person's chest or abdomen, but it is not the same as Burking, which involves intentional application of pressure.

**Clinical Pearl / High-Yield Fact**
To differentiate Burking from other forms of asphyxial death, look for evidence of external pressure on the chest or abdomen, such as bruising or petechial hemorrhages, which can indicate the intentional application of force.

**✓ Correct Answer: D. Traumatic asphysia**