A blank color is created by mixing together a primary and a secondary color.
ОА.
cool
OB. tertiary
O C.
warm
D.
neutral

i would say the answer is b. zigzag lines of the leaves. i believe this is the answer because zigzag lines go in different direction while the other options like: the vertical lines of the trees, the dotted lines on the road, and the curved lines of the park benches go in one direction.