The following types of materials are usually the most ductile

A. Face centered cubic lattice

B. Body centered cubic lattice

C. Hexagonal close packed lattice

D. All of the above

Answer: Option A

Solution(By Examveda Team)

A face-centered cubic crystal structure will exhibit more ductility (deform more readily under load before breaking) than a body-centered cubic structure.
The bcc lattice, although cubic, is not closely packed and forms strong metals. Alpha-iron and tungsten have the bcc form.