The most accurate answer is:
A. It included monuments that glorified the gods and showed religion in society.
Ancient Mesopotamian art was characterized by its focus on monumental architecture, such as ziggurats, and artworks that often celebrated the divine and the pantheon of gods, reflecting the importance of religion in Mesopotamian society. While other options have elements of truth, the emphasis on glorifying the gods and the central role of religion in artistic expression distinguishes Mesopotamian art from earlier cultures.