Final answer:
In the Safe Home Access Control case study, the actors are the entities interacting with the system, i.e. Landlord, Tenant, and Device. The 'Professor' is not considered an actor in this scenario.
Step-by-step explanation:
In the context of the Safe Home Access Control case study, actors refer to the entities that interact with the system. In this set up, the actors are typically those who have a role in accessing the home or maintaining the security system. These would typically include the Landlord, the Tenant, and the Device which could be a security hardware or software involved. The option Professor would not be an actor in this context as it is not a role that would typically interact with a home security system unless specified in a different context of the case study.
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