What statement best describes most of the early Christian mosaics?

Most early Christian mosaics are characterized by their use of vibrant colors and symbolic imagery, often depicting biblical scenes, figures of saints, and theological concepts. These artworks aimed to convey religious messages and teachings to a largely illiterate population, serving as visual narratives that reinforced faith. The mosaics typically feature a flat, decorative style with an emphasis on spiritual rather than realistic representation, reflecting the transcendent nature of the divine.