Final answer:
The landlord, Lenny, is prohibited from charging Tess for the remaining lease period because Tess moved out of the apartment in breach of the lease agreement.
Step-by-step explanation:
The landlord, Lenny, is prohibited from charging Tess for the remaining lease period because Tess moved out of the apartment in breach of the lease agreement. Since Lenny cannot attempt to rent the apartment until the lease would have expired, he cannot hold Tess responsible for the remaining lease period.