Final answer:
In a guilty-knowledge test, the polygraph examiner would ask specific details about the crime, such as the amount of money taken, to determine if the individual has knowledge that only a guilty person could possess. The correct question an examiner would ask is, "How much money was taken from the store? $50? $100? $200? $1,000?"
Step-by-step explanation:
In a guilty-knowledge test (GKT), which is a type of polygraph test used in forensic investigations, a polygraph examiner is likely to ask questions that are designed to elicit a physiological response from someone with knowledge only a guilty person could have.
The correct question an examiner would ask is, "How much money was taken from the store? $50? $100? $200? $1,000?" This question presupposes knowledge that only a person involved in the crime would possess, as it relates to specific details of the theft.
Other questions such as "Have you ever stolen anything?" are considered control questions that are too broad and not specific to the incident in question. Questions like "Did you steal the money from the grocery store on March 21?" or "Did you rob the gas station as well as the grocery store?" are relevant but do not necessarily test for guilty knowledge; they are more directed towards a confession of a specific act.