A landlord installs a window bench in a residential condominium. This is an example of:

Chattel refers to personal property that is movable and not permanently attached to real estate. Items classified as chattel can be easily removed without damaging the property. Since a window bench is affixed to the condominium and intended to remain with the property, it does not qualify as chattel.

Conversion involves the process of changing the use or purpose of a property or item. While the installation of a window bench may enhance the utility of the space, it does not change the fundamental nature of the property itself. Therefore, this term does not accurately describe the action of installing a fixture.

Transformation implies a significant change in form or appearance. While the addition of a window bench may alter the aesthetic of the condominium, it does not represent a transformative change in the legal status or classification of the property. Thus, it is not the correct term for this scenario.