Which of the following is an example of firearms evidence?

The choice of weapons as an example of firearms evidence is correct because firearms evidence specifically refers to items that are directly related to the use or presence of firearms in a given situation or crime. This includes guns, bullets, casings, and any other tangible evidence that can provide information about the usage of a firearm, such as its type, functionality, or its involvement in a crime.

Other options listed do not relate to firearms. Blood alcohol levels pertain to assessing impairment or intoxication, computers might hold digital evidence relevant to crimes but are not related to firearms, and checks are a form of financial evidence that does not have any connection to firearms. Thus, weapons are distinctly categorized as firearms evidence due to their direct association with gun-related incidents.