Final answer:
Klem's fixtures in the restaurant space leased from Tonya become real property if they are not removed at the lease's expiration. This situation generally follows the property law rules concerning fixtures, which state that items attached to the property and not removed become part of the real property.
Step-by-step explanation:
When Tonya leases store space to Klem for a restaurant, and Klem installs fixtures such as ovens, booths, counters, and other equipment, these items generally become a part of the real property through a process known as fixture. However, these items become real property under specific conditions. These items would typically become real property if Klem does not remove them at lease expiration, per the usual rules governing fixtures in property law. If the items are not considered trade fixtures or if the lease agreement does not specifically address this scenario, the items would become part of the real property, meaning they would belong to Tonya, the landlord, because they are attached to the property.