Answer:
The correct answer will be option-stomach contents
Step-by-step explanation:
A toxicologist is a person who studies the toxic samples collected from the crime scene and identify the cause of the toxicity responsible for the death.
In the given situation, the person died from the toxic compound in the restaurant where it is expected that he went to eat the food.
Since the poison could have given to the person through food which after eating for digestion enters the stomach first. The toxicologist, therefore, must collect the samples from the stomach contents.
Thus, stomach content is the correct answer.