A shape placed in two-dimensional surface establishes a

a. sense of realism
b. figure ground relationship
c. color
d. linear perspective

Linear perspective is a form of perspective in which drawings or paintings are given apparent depth by showing parallel lines as converging on the horizon.

I would go with D.

The correct answer is "b. figure ground relationship." When a shape is placed on a two-dimensional surface, it establishes a figure-ground relationship. This means that the shape becomes the figure (the object of interest) and the surface it is placed on becomes the ground (the background or surrounding space). This relationship helps create a visual distinction between the object and its surroundings, allowing us to perceive and understand its form more easily. To arrive at this answer, you need to have a basic understanding of the elements of art and their roles in visual perception.