Final answer:
An isotropic material has the same mechanical properties in all directions, thus the statement is false. Anisotropic materials are those with different properties in different directions.
Step-by-step explanation:
The correct answer to the student's question is B) False. An isotropic material is one that has the same mechanical properties in all directions. This contrasts with an anisotropic material, which is a material where the characteristics differ based on the direction in which they are measured. In isotropic materials, attributes such as strength, elasticity, and thermal expansion are uniform regardless of measurement direction. An example of isotropic behavior can be seen in most substances under normal circumstances where there is no preferred direction, implying homogeneous and even distribution of matter.