The correct options are Merge versions and Delete version.

Using Merge versions Maya can move all issues from the old version into the target version and consolidate the two versions so the issues end up assigned to the desired release. This operation is intended to combine the contents of one version into another while removing the source version.

Using Delete version Maya can remove the unwanted version and choose where existing issues should be reassigned during the deletion process. The delete workflow offers the option to move issues to an existing version such as the target version before the source version is removed.

Release version is incorrect because that action only marks a version as released and does not move issues into another version or remove the version.

Archive version is incorrect because archiving hides the version to reduce clutter but does not reassign issues or merge them into another version.

Unrelease version is incorrect because it only changes the released status of a version and does not transfer issues to a different version.

Full AWS Practitioner Certification Question