Final answer:
Shape lays the foundation for the composition of a design, with positive and negative spaces being key elements that artists manipulate to create visual interest and define the figure-ground relationship within an artwork.
Step-by-step explanation:
The foundation for the composition of a design is primarily laid out by shape. Shape, as defined in art, is characterized by having an outline or boundary and can be geometric or organic in nature. It is fundamental in determining the arrangement of space within a design, both positive and negative space. Positive space refers to the area occupied by the main subjects of the artwork, whereas negative space is the area that surrounds and is between the subjects. In composition, artists plan and organize these elements to create visual interest and impact. For example, in a complex composition, identifying positive and negative shapes can be challenging, but it is crucial for balancing the artwork. The interplay of positive and negative spaces shapes the figure-ground relationship, which is pivotal for a strong composition.