Correct option is B
Distress is the term used to describe the physical manifestations of defects in structures, such as cracks, spalling, pop out, staining, and corrosion. It represents the visible signs indicating that the structure is experiencing problems.
Preservation: Refers to the act of maintaining or protecting something, not the manifestations of defects.
Defects: Refers to imperfections or flaws, but does not specifically describe their physical manifestations.
Failure: Typically denotes a complete breakdown or collapse of a structure rather than the visible signs of issues.
Therefore, the correct answer is (b) Distress.
