Final answer:
c. When a lease expires, trade fixtures that are not removed become the property of the property owner.
Step-by-step explanation:
When a lease expires and trade fixtures are not removed, the general rule is that the fixture becomes the property of the property owner to do with as they please (Option C). The property owner can choose to keep the fixture, sell it, or dispose of it. The former tenant is typically not responsible for removing or returning the fixture, unless there is a specific agreement in the lease requiring them to do so.
However, it is always important to consult the specific lease agreement and any applicable laws in the jurisdiction to determine the rights and responsibilities of both parties.