Final answer:
Option C). The answer to the question about two or more geometric figures that lie on a common plane is 'coplanar figures.' Both parallel and orthogonal vectors are essential concepts related to figures lying in a plane in geometry and physics.
Step-by-step explanation:
The inquiry concerns two or more geometric figures that are situated on the same plane. Coplanar figures provide an answer. Since these figures are all in the same plane, they may or may not overlap, but all of their points are on a single, flat surface.
Parallel vectors are vectors that travel in the same direction but never cross paths; they can occur in two-dimensional as well as three-dimensional planes. Perpendicular and orthogonal vectors, on the other hand, point in directions that are precisely 90° apart. These ideas are important in geometry and physics, especially when working with coordinate systems like the polar coordinate system or vector operations and constructions like the parallelogram rule.