what is this style of artwork known as?\n○ mosaic\n○ frescoe\n○ cubism\n○ mural

Brief Explanations:

This artwork is made up of small pieces like tiles or stones, which is characteristic of mosaic art. Frescoes are paintings on wet plaster, cubism is a modern - art style with geometric shapes, and murals are large paintings on walls.

Answer:

A. mosaic