Which of the following allows for the attribution of messages to individuals?

Adaptive identity refers to the ability of an identity system to adjust or change based on varying contexts or environments. While it can enhance security and user experience, it does not inherently provide proof of message attribution or prevent a sender from denying their actions.

Authentication is the process of verifying the identity of a user or system. While it is essential for confirming who is sending a message, it does not prevent the sender from later denying that they sent it. Authentication alone does not provide the legal or technical proof required for non-repudiation.

Access logs are records that document who accessed a system and when. Although they can provide context regarding actions taken, they do not directly attribute messages to individuals in the way non-repudiation mechanisms do. Access logs may help in investigations but do not prevent denial of message origination.