Which of the following is considered contraband?

The correct choice is items that are illegally possessed because contraband is defined as goods that are prohibited by law from being imported or exported. This includes items that are illegal to possess, such as weapons, illegal drugs, or stolen property. Law enforcement agencies typically seize such items as they are considered a violation of legal statutes.

In contrast, witness testimony is a crucial part of the legal process but does not fall under the definition of contraband. Tools used in everyday life may be legitimate and legal products that help individuals perform daily tasks and therefore do not qualify as contraband. Abandoned property can have different legal implications and is not inherently illegal, which sets it apart from contraband items. Therefore, the definition of contraband directly aligns with items that are illegally possessed.