The following situations are presented to a medical examiner. in which situation is the medical examiner most likely to gather more evidence before determining the manner of death? a) 18-year-old male recovered in alley with gunshot wound to back of head b) 25-year-old male recovered from rapids after his empty kayak is sited by friends c) 35-year-old male deceased at home from a drug overdose d) 90-year-old female deceased at home with no external injuries