**Core Concept**
Simple hanging refers to a type of judicial hanging where the body is suspended from a ligature, typically a rope, around the neck. In this scenario, the knot's position is crucial for determining the cause of death.

**Why the Correct Answer is Right**
In simple hanging, the knot typically comes to rest at the **mandible** or the lower jawbone. This occurs due to the ligature's position around the neck, which causes the body to be suspended with the knot above the mandible. The weight of the body stretches the ligature, resulting in the knot settling at the mandible.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect as the knot in simple hanging does not come to rest at the **hyoid bone**. Although the hyoid bone is a common location for ligature marks, it is not the typical resting place of the knot in simple hanging.
* **Option B:** This option is incorrect as the knot in simple hanging does not come to rest at the **sternum**. The sternum is a bony structure in the thorax, and it is not directly related to the knot's position in simple hanging.
* **Option C:** This option is incorrect as the knot in simple hanging does not come to rest at the **clavicle**. The clavicle is a bony structure that connects the arm to the body, and it is not directly related to the knot's position in simple hanging.

**Clinical Pearl / High-Yield Fact**
In cases of hanging, it is essential to note the position of the knot and the presence of any ligature marks on the body. The location of the knot can provide valuable information about the type of hanging and the cause of death.

**Correct Answer:** C.