What type of estate reverts back to the grantor after the tenant's life expires?

The correct answer is C, as a reversion involves a situation where the grantor retains a right to the property after a specified event occurs, such as the expiration of a tenant's life. In the case of a life estate, the tenant has the right to use the property for their lifetime, and when they pass away, the ownership of the property reverts back to the grantor or their heirs. This is different from a remainder, which refers to a future interest that passes to someone other than the grantor after the life estate ends. A leasehold estate, on the other hand, is a temporary arrangement where the tenant has rights to use the property but does not have ownership that would revert back to the grantor in the way a reversion does. Understanding these distinctions helps clarify the concept of property rights and interests in real estate.