Final answer:
The word that best completes the sentence is 'form'. The design of a work of art influences the form created within the piece and felt by the observer.
Step-by-step explanation:
The word that best completes the sentence is form. The design of a work of art influences the form created within the piece and felt by the observer. The term 'form' refers to the physical appearance or shape of the artwork. It encompasses the elements of composition, such as the arrangement of lines, shapes, colors, and textures.
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