**Core Concept**
In forensic medicine, blast injuries are caused by the rapid release of energy from an explosion, leading to damage to surrounding tissues and organs. The primary mechanism of injury is the shockwave generated by the explosion, which can cause barotrauma to internal organs.

**Why the Correct Answer is Right**
The lungs are the most susceptible organ to blast injuries due to their anatomical position and the nature of the shockwave. The blast wave, also known as the primary blast injury, is a high-pressure wave that can cause damage to the alveoli and airways in the lungs. This results in pulmonary barotrauma, characterized by damage to the lung tissue and airspaces. The lungs' susceptibility to blast injuries is also due to their low density and the presence of air-filled spaces, which can be easily compressed and damaged by the shockwave.

**Why Each Wrong Option is Incorrect**
**Option A:** The liver is not as susceptible to blast injuries as the lungs, as it is a solid organ with a higher density and is not directly exposed to the shockwave.
**Option C:** While the nervous tissue can be affected by blast injuries, it is not the most common organ affected. Blast injuries can cause damage to the nervous system, including the central and peripheral nervous systems, but this is less common than pulmonary barotrauma.
**Option D:** The skeletal system can be affected by blast injuries, particularly fractures and soft tissue injuries, but it is not the most common organ affected.

**Clinical Pearl / High-Yield Fact**
In forensic medicine, the presence of pulmonary barotrauma is a key indicator of a blast injury. The characteristic findings include damage to the lung tissue, airspaces, and airways, with or without the presence of a primary blast injury.

**✓ Correct Answer: B. Lungs**