What is the ability to withstand shock, to endure stress, and to deform without breaking?

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The ability to absorb energy from shocks and to deform without breaking describes toughness. Toughness is about how much energy a material can absorb before fracturing and how it behaves under impact—combining strength and ductility so it can deform and still hold together.

Elasticity is about returning to the original shape after the load is removed, not about absorbing energy or sustaining plastic deformation. Hardness is about resisting surface deformation like indentation or scratching, not about absorbing impact energy. Strain is the actual amount of deformation that occurs under load, not a material’s resistance to breaking. Stress is the internal force per area within the material, not a measure of its ability to withstand shock.

So this description best fits toughness, which isn’t among the listed terms. That’s why none of the provided options perfectly match the concept.