Which type of tenancy can also be referred to as a tenancy at sufferance?

The correct choice refers to a tenancy at sufferance, which is commonly known as a holdover tenancy. This situation arises when a tenant remains in possession of a property after their lease has expired, without the landlord's consent. Essentially, the tenant is in a state of occupying the property without a legal right to do so, thus "suffering" through the tenancy. It typically occurs when the landlord has not taken action to remove the tenant following the lease termination.

This type of tenancy is distinct from other types mentioned. For example, an estate from period to period refers to a lease agreement that automatically renews at the end of each period (such as monthly or yearly), but does not involve an illegal occupation scenario. Similarly, an estate at will is a more flexible arrangement where either party can terminate the agreement with proper notice, thus not aligning with the concept of a tenant suffering in possession. A gross lease involves a rental agreement where the landlord covers certain expenses, like utilities and property taxes, which doesn't pertain to the issue of tenancy duration or legal possession.

Thus, holdover tenancy aptly describes a tenancy at sufferance, highlighting the tenant's unauthorized occupation after the lease has concluded.