Final answer:
The mortgagor has the right to quiet uninterrupted possession of the property when not in default.
Step-by-step explanation:
The mortgagor, or the borrower, has the right to quiet uninterrupted possession of the property when not in default. This means that as long as the mortgagor is fulfilling their obligations under the mortgage agreement, they have the right to use, enjoy, and possess the property without interference from the mortgagee or any third party. It is important to note that this right is subject to the terms and conditions outlined in the mortgage agreement.