Final answer:
The enlarged ownership interest of a surviving joint tenant is documented by recording an affidavit signed by authorized representatives, declaring the death of the joint tenant.
Step-by-step explanation:
The enlarged ownership interest of a surviving joint tenant is documented by recording an affidavit signed by authorized representatives, declaring the death of the joint tenant.
An affidavit is a legal document that is typically used to declare facts or provide evidence. In this case, the authorized representatives sign the affidavit to declare the death of the joint tenant. By recording this affidavit, the surviving joint tenant's ownership interest is officially documented and recognized.