How does atmospheric perspective create realism?

Which of these pieces best illustrates the use of variety over unity? leonardo da vinci, study of human proportion: the vitruvian man laylah ali's untitled louise lawler's pollock and tureen auguste rodin's the three shades?

Amuseum displays an ancient aztec calendar. this object holds cultural value because

(i think my answer is a, am i correct? ) a pentagonal traffic sign is a sign. a. school crossing b. parking c. wrong way d. yield