the principle of contrast best relates to which of the following?\n○ unity\n○ oneness\n○ form\n○ tension

Brief Explanations:

Contrast often creates a sense of tension in art and design by juxtaposing different elements. Unity and oneness are about harmony and singularity, not directly related to contrast. Form refers to the shape or structure of an object, not closely tied to the concept of contrast. Tension is enhanced by contrast as differences between elements draw the viewer's attention and create a dynamic effect.

Answer:

Tension