Which of the following would be considered a form of forfeiture of title?

A condition in a deed that results in the loss of title is indeed a recognized form of forfeiture of title. In legal terms, this often refers to a clause or stipulation embedded within the deed that, if not met, can lead to the forfeiture of the property. Such conditions might mandate specific actions, behaviors, or usages of the property that must be maintained, and failure to adhere to these stipulations could void the title, effectively resulting in the original grantor reclaiming ownership. This concept underscores the importance of carefully reviewing the terms of a deed before completing a real estate transaction, as it emphasizes the legal obligations tied to property ownership.

In contrast, failure to pay property taxes can result in a lien or tax sale but does not directly indicate a forfeiture of title in the same context as a deed condition. Selling property under market value does not affect title ownership; it pertains more to the pricing strategy rather than legal ownership status. Negotiating lease terms involves tenancy and does not directly relate to title ownership at all, as it deals with the rights granted to a tenant rather than the title itself.