Final answer:
The lease with no specified occupancy period is likely a tenancy at will, which allows either party to terminate the tenancy at any time with reasonable notice, as opposed to tenancies that have fixed terms or specified durations.
Step-by-step explanation:
When a lease contains no mention of an occupancy period, it is most likely to be classified as a tenancy at will. Unlike a tenancy for years or a periodic tenancy, a tenancy at will does not have a fixed-term duration nor does it operate on a repeating schedule, such as monthly or annually. The tenant stays with the consent of the landlord, and either party can terminate the tenancy at any time, provided they give reasonable notice, often subject to state laws.
On the other hand, a tenancy at sufferance occurs when a tenant remains on the property without the landlord's consent after the lease term has ended. Given that the lease in question does not mention an occupancy period, and assuming the occupation is with the landlord's consent, option B) A tenancy at will is the correct answer.