Question

fff: anisotropy
use the information below to answer the question.
things created with fused filament fabrication (fff) are inherently stronger in one
direction than in another. the term for this anisotropy. things parallel to the print bed
(the xy axis) are stronger than those that are perpendicular to it (the z axis). a good
example of something that is anisotropic is timber. it is much easier to split wood
going with the grain rather than going across it.
with fff, layer adhesion is based on the printer calibration and operating parameters.
this is set by the person operating the printer. when designing a functional piece, the
user should identify which direction it is being printed to take advantage of the
technology. stresses build up in the valleys between each layer as well. layers are
weak in the z axis. a user can optimize the print by having two parts. a strong axis
nested against a weaker one will support the part.
what term describes when something is inherently stronger
in one direction than in another?
buoyancy
enthalpy
anisotropy
gravity

Explanation:

The text clearly states that the term for something being inherently stronger in one direction than another is anisotropy. Buoyancy is related to floating in a fluid, enthalpy is a thermodynamic quantity, and gravity is the force of attraction. Only anisotropy matches the description in the question.

Answer:

anisotropy