Answer:
Leonardo da Vinci
Explanation:
Leonardo da Vinci began painting the Mona Lisa about 1503, and it was in his studio when he died in 1519.
D should be the right answer
I believe the answer is Monochromatic
A color scheme could be categorized as monochromatic if it's derives only from single based hue using additional tints, tones, and shades.
The usage of these will alter the brightness and the saturation of the color just like what we see in the painting.
