The correct option is The removed user can be reinvited to the Jira Cloud site phoenix-team.scrumtuous.com.

When a user is removed from a specific Jira Cloud site the action removes their site membership but does not delete the underlying Atlassian account or the record of their activity. Administrators can invite the same Atlassian account back to that site using the normal invite process. That is why The removed user can be reinvited to the Jira Cloud site phoenix-team.scrumtuous.com is definitely true.

Removing the user from the site also revokes their access to every Jira Cloud site and organization they belong to is incorrect because removing a user from one site does not automatically remove them from other sites or from an organization. Organization and site memberships are managed separately and other site or organization admins must remove the user there if they want to revoke access globally.

Saved searches and filters that mention the removed account will stop working until someone updates them manually is incorrect because Jira retains issue assignments and user references even when a user is deactivated or removed from a site. Filters that rely on account identifiers will generally continue to return issues for the deactivated account rather than simply stopping to work.

User picker fields that reference the removed account will be automatically cleared or reassigned is incorrect because those fields keep referencing the deactivated or removed account. Jira does not automatically clear or reassign user picker values when a user is removed from a site and any changes must be made manually by an administrator or through a scripted update.

Full AWS Practitioner Certification Question