How has the artist used light to create a desired affect in this piece? What do you hypothesize the source of the light to be and why?

What made this representation of the virgin mary revolutionary

Became a common baroque tool? a. compositional movement b. classical perspective c. linear perspective d. the s-curve

& hurry! i need this done by 3: 00 pm! changes in artists' art brought about by the inventions of automobiles and trains shows that society influences what? brainliest whoever gets it correct!