Avisual metaphor is effective because

A  documentary film  is a nonfictional motion picture intended to document some aspect of reality, primarily for the purposes of instruction, education, or maintaining a historical record.example: farenheit 911

This would be tesserae.

Riffin tells a story about photographing elephants in a wildlife sanctuary in africa. he says that the photographer brought back more than just an amazing story.

Not 100% sure on the answer but i’d say universal as i don’t see why it would be in the definition