Answer:
time of discovery of the body
Step-by-step explanation:
The time of the discovery of the body is the most important factor among the other given information in the question that should be noted by the detectives. Time plays a very important role in analyzing the cause of crime that took place. Detectives can note down the time of the discovery of the body and try to relate with other evidences found at the crime scene to arrived at the conclusions and finally hunt down the suspect.