What is an Aztec codex?

An Aztec codex refers to books that were created by the Aztec civilization, primarily before and during the early Spanish conquest. These codices were significant cultural artifacts, as they served various purposes, including recording historical events, religious rituals, and important legal documents, often using a combination of pictorial images and glyphs or, in some cases, alphabetic writing.

The forms in which these codices were made and the materials used, such as bark paper or animal skins, allowed for a diverse range of content. Thus, recognizing the Aztec codex as books written in pictorial or alphabetic form captures the essence of how the Aztecs documented their world, beliefs, and traditions. This makes choice D the most accurate description among the provided options.