Kimon uses his organizationally provided credentials to log into his workstation and is then able to use services across the organization and in the cloud. What identity solution has his organization implemented?

Single sign-on provides a single authentication process to allow authorization to multiple services. An access control list, or ACL, is a ruleset used to determine if a subject can gain access to a service or system. Multifactor authentication requires multiple factors, and the specifics of how Kimon logged in were not discussed in the question. Finally, role-based access control uses a subject's role(s) to determine if they can access a service or system, and no mention of roles was made.