. ________ is the property of bitumen that permits it to undergo great deformation or elongation.1 pointFlexibilityDuctilityViscosityStiffness.

Break Down the Problem

1. Identify the key concepts related to bitumen properties.
2. Define each term provided in the options.

Relevant Concepts

1. Flexibility: Refers to the ability of a material to bend without breaking.
2. Ductility: The ability of a material to deform under tensile stress, allowing it to stretch or elongate.
3. Viscosity: A measure of a fluid's resistance to flow; higher viscosity means less flow.
4. Stiffness: The rigidity of a material; how much it resists deformation when a force is applied.

Analysis and Detail

• In the context of bitumen, the property that specifically refers to the ability to deform significantly without breaking is known as ductility. While flexibility involves bending, ductility emphasizes elongation.

Verify and Summarize

• Upon analyzing the definitions and properties, it becomes clear that ductility is the most appropriate term to describe bitumen's ability to undergo substantial deformation or elongation.

Final Answer

Ductility is the property of bitumen that permits it to undergo great deformation or elongation.