Question

ability to bend or stretch without breaking
a. ductility
b. tensile strength
resistance to being pulled apart
c. hardness
resistance to being scratched or dented
d. alloy
a mixture of two or more elements to improve properties

Explanation:

Ductility is the ability of a material to bend or stretch without breaking. Tensile strength is the resistance to being pulled apart. Hardness is the resistance to being scratched or dented. An alloy is a mixture of two or more elements to improve properties.

Answer:

ability to bend or stretch without breaking - a. ductility
resistance to being pulled apart - b. tensile strength
resistance to being scratched or dented - c. hardness
a mixture of two or more elements to improve properties - d. alloy