Graphic design is the mode of creating visual content to communicate and present messages. It used typography, photography and illustration to convey messages and to meet user's basic needs. It is also known as Communication design.
Emphasis is the principle of creating a centered interest in an artwork, often achieved by color contrast and by lines that direct the eye to it.
Using this definition, we can see all of the above. Color contrast and lines that lead the viewer's focus to a focal point.
So, it can't be chiaroscuro because there is no obscurity.
It can't be sfumato because there are very few soft tones (lots of contrast)
It can't be primary colors because we see more than just the three primaries.
That leaves complementary colors, which makes sense. The complementary colors put together creates lines that lead our attention.
Answer: b.
The answer is they were always made with tiny tesserae for lifelike detail.
Answer:
I would say the second option is correct.
Explanation: