What must landlords provide according to the 'Warranty of Habitability'?

The correct answer highlights the legal obligation that landlords have to provide tenants with rental properties that meet minimum safety and health standards. The 'Warranty of Habitability' is a key principle in landlord-tenant law, ensuring that rentals are not only livable but also safe for the tenants who reside in them. This includes requirements such as functioning utilities, structural integrity, and proper sanitation facilities.

Other options, while relevant to tenant rights or property management, do not capture the essence of the Warranty of Habitability. Expensive upgrades are not mandated; instead, the focus is on basic standards that make the property acceptable for living. Regular inspections by health authorities can be beneficial but are not a requirement imposed on landlords by this warranty. Lastly, while the protection of tenants' personal belongings is important, it falls outside the scope of habitability, which is primarily concerned with the physical condition of the rental unit itself.