A lease in which the tenant pays some (or all) operating expenses associated with the real estate is called a ______ lease.

The correct terminology for a lease where the tenant pays some or all operating expenses related to the property is a “Net lease.” In a net lease, the tenant is typically responsible for paying not only the rent but also additional expenses such as property taxes, insurance, and maintenance costs.

In distinction, a "Gross lease" is one in which the landlord pays all operating expenses, and the tenant only pays a fixed rent amount. The term "Total lease" is not commonly used in the context of real estate leases, and while a "Fixed lease" might imply a set amount for rental payments, it does not specifically address the allocation of operating expenses as pertains to the tenant's responsibilities.

Thus, recognizing the specific financial structure of a net lease is crucial in real estate, as it clarifies the division of financial responsibilities between landlords and tenants.