An interval of a 1st is called a(n).

The 1st interval also has a unique name rather than calling it a 1st, it is usually referred to as Unison

Explanation:

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.

franz marc (d) was an artist during the expressionist movement.