Free points like i promised

I'll mark brainliest, i need this answered very ! what happens when there is a transfer of artwork using a grid? a. acts to verify the analysis of the composition b. the viewer's eye adjust to unity c. unify the composition d. none of the above

Where is the photographer’s signature generally located? centered at the top of the photograph on the side of the photograph in the lower right hand side below the photograph photographs are never signed

The merode altarpiece by robert campin in what way did this painting make art history?