What term refers to a single word or partial word that appears on its own line of text at the end of a paragraph orphan serif slug widow

The answer is:

ligature

the correct answer would be "the amiens cathedral"

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.