The correct option is A Anisotropic property
Amorphous solids are formed by sudden cooling of a liquid, so they can be called supercooled liquids or pseudo solid. These solids having tendency to flow on sudden cooling.
Isotropic solids are amorphous solids which shows same value for physical properties in all directions. These solids don’t show any long-range order and their arrangement is disordered. Thus, it gives same physical properties value in all directions.
Polymorphic solids have different crystalline structures of the same substance, in different conditions. It is an characteristic of crystalline solids.
Anisotropic solids are crystalline solids which shows variation in physical properties with directions. This is due to the long range ordered arrangement in crystalline solids. Thus, there will be variation in physical property in different direction.