**Core Concept**
Falanga is a form of torture or physical punishment, characterized by the deliberate and systematic infliction of pain on the feet, typically through beating or kicking. This method of torture is often used to extract information or to inflict severe physical and psychological suffering.

**Why the Correct Answer is Right**
The correct answer, "Beating of feet," is the correct definition of Falanga. This method of torture involves the deliberate infliction of pain on the feet, which can cause severe bruising, swelling, and even long-term damage to the foot structures. The pain and discomfort caused by Falanga can lead to psychological trauma and can be used as a means of coercion. The pain is caused by the impact of the beating, which can stimulate nociceptors in the skin and underlying tissues, leading to the release of pain mediators such as bradykinin and substance P.

**Why Each Wrong Option is Incorrect**
**Option A:** Suspension by wrist is a form of physical punishment, but it is not a specific method of torture known as Falanga. Suspension by wrist can cause pain and discomfort, but it does not target the feet specifically.

**Option C:** Placing electric wires in vagina is a form of sexual torture and is not related to Falanga. This method of torture involves the use of electric shock to cause pain and discomfort, but it targets the genital area rather than the feet.

**Option D:** Clamping of thighs between bamboos is a form of physical punishment, but it is not a specific method of torture known as Falanga. This method of torture can cause pain and discomfort, but it does not target the feet specifically.

**Clinical Pearl / High-Yield Fact**
Falanga is a form of torture that can cause long-term damage to the foot structures, including the skin, muscles, and bones. It is essential for medical professionals to be aware of this method of torture and its potential consequences to provide appropriate medical care and support to victims.

**✓ Correct Answer: B. Beating of feet**