Which term refers to assistance provided to another person to hinder criminal proceedings?

The term that refers to assistance provided to another person to hinder criminal proceedings is "Accessory." An accessory typically plays a supportive role in a crime, providing assistance or resources to the principal offender with the intention of facilitating the crime or helping the offender avoid detection or apprehension after the crime has been committed. This can involve actions such as concealing evidence, providing a means of escape, or otherwise helping the perpetrator evade law enforcement.

In contrast, an accomplice is someone who aids and abets the commission of a crime and is often involved in the planning and execution of that crime, while a perpetrator is the individual who actually commits the crime. Causation refers to the relationship between an action and its effect; in legal terms, it typically concerns whether a defendant's conduct caused a particular result. Hence, "Accessory" is the most appropriate term to describe someone who helps hinder criminal proceedings.