Lividity can be defined as the typical bluish-purple discoloration of the skin after death. Rigor mortis can be defined as the postmortem state in which the muscles become stiff.
After death, the stomach contains identifiable ingested foods within two hours.
Rigor mortis is characterized by the stiffening of the body after death, which is caused by the absence of ATP in muscle tissues.
Postmortem lividity or livor mortis is caused by the accumulation of blood in blood vessels (the lack of arterial pressure) as a result of gravity.
The most relevant information to determine the time of death is the presence of lividity, rigor mortis, and/or stomach contents (Option c).
