What are positive shapes the shapes of artist's canvasesthe main shape in a paintingthe automatic shapes created for backgrounds

Of all these answers, B is the most correct. A positive shape makes a juxtaposition with “negative space”. The main shape is used to bring out detail of its surroundings; to make it “come alive” so to speak.

Hai,the answer is b.)  a founder of the baroque style in francegoodluck!   ʕ￫ᴥ￩ ʔ