Final answer:
The Byzantine style notably introduced abstraction into art history, characterized by a stylized and spiritual approach leading to the representation of figures with standardized, flattened features. Therefore, the correct option is C.
Step-by-step explanation:
The Byzantine style introduced abstraction into the history of art. Byzantine art forged a distinctive path away from the appearance and reality of classical arts, translating three-dimensional forms into more spiritual and ethereal expressions, often lacking in dimension and displaying a flattened look. Instead of depicting individuals with dynamic and realistic proportions as seen in earlier Greek and Roman art, Byzantine art standardized facial features and reduced the use of large sculptures, leading to figures that had huge eyes, a penetrating gaze, and usually a stern look. This stylized nature can also be seen as a precursor to the more individualized and naturalistic renditions of the human figure which later emerged during the Early Renaissance.