What's so good about a Brainliest I don't even have a brain so don't mind me- (Free Points)

What is the most famous racetrack in america?

Pls! choice of medium allows the artist to a. convey different messages. b.experiment with combining materials to create new media. c.reconnect with old forms of art. d.improve realism in art, particularly with portraits.

Which has a heavier visual weight, an object with a simple contour or one with a complicated contour?