Which one is a optical illusion's

What purpose do the elements of art serve for artists and those who view artworks?

Why did bramante’s plans for the st. peter’s basilica never come to fruition? a. he and the pope could not agree on the plans. b. the pope changed his mind several times. c. the pope died and political unrest followed. d. bramante died before he could act on the plans.

The venus of willendorf and other similar statuettes have the following characteristics except for