Horizontal ligature mark in the neck is seen in :
C i.e. Strangulation Horizontal (transverse) complete ligature mark with maximum (well marked) external signs of asphyxia such as congestion, cynosis & petechiae on face along with extensive bruising of neck muscle and ecchymosis of sub cutaneous tissueQ is characteristic of strangulation.
Throttling
Hanging
Strangulation by ligature
Chocking