Do the 3 questions for i'm not really good at this stuff.

1.) Chemical decomposition

2.) Too much sunlight on the chapel ceiling faded the paintings

3.) Volcanic ash

nope! and if it is, i'd rather not know lol

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.