What term describes the ability of an object to resist compression?

The term that describes the ability of an object to resist compression is stiffness. Stiffness is a mechanical property that quantifies how much an object deforms under an applied load. In the context of compression, a stiffer material will demonstrate minimal deformation when a compressive force is applied, indicating its capacity to maintain its shape and structural integrity under such stress.

Understanding stiffness is crucial in various fields, including engineering and materials science, as it directly impacts the performance and durability of structures and components. For instance, in medical imaging techniques like sonography, the stiffness of tissues can affect the quality of the ultrasonic signals produced, which is essential for accurate diagnostics.

Other terms in the choices refer to different material properties: ductility relates to a material's ability to deform under tensile stress, elasticity refers to the capacity to return to original shape after deformation, and flexibility denotes the ability of a material to bend easily without breaking. While these properties are related, they do not specifically define resistance to compression, which is why stiffness is the most appropriate choice.