An automated Content ID claim is made for a user-uploaded video, and owner of the video, what option would you choose if you no longer wish to assert your rights on the disputed content?

Choosing "Release" is the correct option when you no longer wish to assert your rights on content that has received an automated Content ID claim. This action effectively drops your claim, allowing the user's video to remain on YouTube without any restrictions from your Content ID system. "Takedown" would remove the user's video, which is the opposite of your stated intention. "Restore" and "Reinstate" are not standard Content ID actions for relinquishing a claim; they typically relate to restoring a video after a takedown or reinstating a claim, respectively.