Challenge 3: Why a Mug's Handle Can Differ in Color From the Rest of the Mug — Solution Walkthrough

The answer:

Per this chapter's own material, a single object can have multiple
materials assigned to different faces — the mug's own body faces can
carry one material while its handle faces carry a different one,
entirely within the same single mesh object.

Why this doesn't require separate objects:

Material assignment happens at the face level, not just the whole-
object level. Selecting specific faces (the handle) and assigning a
different material to just that selection leaves the rest of the
object's own faces using whichever material they already had, without
needing to split the mug into two separate objects just to achieve two
different colors.

Why this chapter uses exactly this example:

Per this chapter's own material, a mug with a differently-colored
handle is given directly as a useful, concrete example of multiple
materials on faces of one single object — precisely the scenario
described in this exercise.

WHY THIS WORKS AS AN ANSWER
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This exercise checks that per-face material assignment is correctly
understood as operating within a single object, not requiring separate
objects for each differently-colored part.