What type of items would fall under "instrumentalities of a crime"?

The correct choice accurately describes "instrumentalities of a crime" as items that are used to facilitate, carry out, or enable the commission of a criminal act. These can include weapons, tools, or other means that directly contribute to the execution of the offense. For instance, a firearm used in a robbery or a burglary tool used to break into a property would be classified as instrumentalities of those crimes.

In understanding the context, items not related to the crime at all do not fit this category because they cannot be associated with the commission of the offense. Similarly, items found only after a conviction would not qualify as instrumentalities since they would not have had an active role in committing the crime. Lastly, testimonies given in court, while they are crucial for the legal process, do not constitute physical items or means used in the execution of a crime. Thus, the identification of weapons, tools, and other means as instrumentalities is the clearest articulation of this term within criminal law.