Final answer:
The issue with trade fixtures is that they are physically attached to the property.
Step-by-step explanation:
The correct option among the given choices is (a) Physically attached.
A trade fixture is a chattel, personal property that a tenant attaches to a leased property for the purpose of conducting business. The issue with trade fixtures is that they are physically attached to the property, which means they cannot be removed by the tenant without the permission of the landlord. This distinguishes trade fixtures from other types of personal property.