Which of the following correctly defines an accessory after the fact?

An accessory after the fact is defined as someone who assists a felon knowing that the person has committed a crime. This definition emphasizes the element of knowledge; the individual must be aware that a crime has occurred and still chooses to assist the perpetrator. Assistance can take many forms, such as providing shelter, helping to evade law enforcement, or providing any support that may help the felon avoid arrest or prosecution.

In contrast, the other choices do not meet the legal criteria for being classified as an accessory after the fact. Providing an alibi for a suspected criminal may imply knowledge of their wrongdoing, but it's specifically the act of help following the crime that defines the accessory role. Additionally, someone committing the same crime would be classified as a co-defendant, not an accessory, and an innocent bystander has no involvement or knowledge of the criminal act at all, making them irrelevant to this definition.