Which of the following is an example of a physical deterioration that is curable?

A physical deterioration that is curable refers to a condition that negatively impacts the property but can be fixed through repairs or maintenance. In this scenario, roof leakage that can be repaired represents a specific physical issue with the property. Addressing such a defect can restore the property to its optimal condition, which directly enhances its value.

In contrast, the other options involve issues that are either not physical in nature or are linked to external factors that do not have a straightforward repair solution. Obsolescence due to a poor floor plan pertains to functional obsolescence, where the design itself limits utility and market appeal, often requiring significant renovations rather than simple repairs. The decrease in value from nearby industrial use or loss of value due to market changes relates to external economic factors that affect the property’s valuation but cannot be corrected through physical repairs.