In a spatial assembly puzzle, a complete composite figure is given. You have to identify which among the given options represents a piece that is NOT required or cannot be used to fit together to construct this main figure.

In visual assembly/decomposition problems, we analyze the constituent geometric modules of the primary pattern. By validating the shapes, vertex alignments, and relative proportions of options A, B, C, and D against the sub-segments of the target composition, we find that the module corresponding to option B cannot form any integrated portion of the geometric layout. Hence, it is not required.