Why is it so hard to know much about the earliest animated shorts? Group of answer choices

Very few of them are still available.

Animation was banned in many cultures.

They were unpopular, so no audience saw them.

Shorts were made differently from feature films.

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.