This painting by correggio, assumption of the virgin, is an example of the art technique which involves the graduation of light and shadow to produce a hazy effect. what is the term used for this technique?
a. modeling
c. sfumato
b. blending
d. lithograph

I believe the best answer for this question is "sfumato." The definition of sfumato is using colors and tones to shade into one another, producing outlines that are muted and softened, producing a hazy effect. You can also eliminate the other answers for different reasons; a "lithograph" is a painting pressed by a smooth surface. "Modeling" involves creating art by using a model. "Blending" is close, but does not necessarily create a hazy effect, which sfumato does. Hope this helps.

The artist above used rapid brushstrokes 

Answer key light,fill light,backlight