**Core Concept**
The technique of blocking the facial nerve at the neck of mandible is a method used in anesthesia to prevent facial muscle movement during surgical procedures. This is achieved by temporarily paralyzing the facial nerve, which controls the muscles of facial expression.

**Why the Correct Answer is Right**
The correct answer is a specific method of blocking the facial nerve, which involves the use of a local anesthetic to infiltrate the nerve at the stylomastoid foramen, located at the neck of the mandible. This technique is used to prevent the spread of anesthetic to the surrounding tissues and to ensure accurate and predictable nerve blockade. The facial nerve is a mixed nerve that carries motor fibers to the muscles of facial expression, as well as sensory fibers from the external ear and taste fibers from the anterior two-thirds of the tongue.

**Why Each Wrong Option is Incorrect**
* **Option A:** This is not a recognized method of blocking the facial nerve, and the anatomical location described is not accurate.
* **Option B:** This is a different method of nerve blockade used for different types of procedures, and it does not involve the facial nerve.
* **Option C:** This is a different technique used for regional anesthesia, and it does not involve the facial nerve.

**Clinical Pearl / High-Yield Fact**
When performing facial nerve blockade, it is essential to use a high concentration of local anesthetic and to infiltrate the nerve at the correct anatomical location to ensure accurate and predictable nerve blockade.

**Correct Answer: B. Raming's technique**