Final answer:
During the Classical Period, art underwent several changes, including the development of more realistic styles, the use of perspective in paintings, and the addition of details in sculptures.
Step-by-step explanation:
In the Classical Period of art, which occurred from 480/479-323 BCE, several changes took place. Greek artists moved away from the heavily stylized and two-dimensional art of Egypt and the Levant, and developed their own realistic styles that aimed to capture the ideal human form. Sculptures became more naturalistic, with realistic anatomy and serious expressions. Painters also developed techniques such as perspective and multiple ground lines to enrich compositions. Roman art during this period was based on copies of Greek art, but added more realism with details like wrinkles and scars.