What makes a work or art successful

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?

Nadia is doing research on some aspects of art in japan and china. nadia complete a sentence describing a characteristic of zen buddhist art. zen buddhism is better known ; “calligraphy, ceramics, or domes? ” “and pottery, towers, or ink ” rather than sculptures.

This is a picture i'm drawing for my art class! i need to know if it good (first of all) and that it represents dia de los muertos (