Think of the word synergy? How does this apply to the theatre?

it is mutually beneficial to both parties

Explanation:

synergy is the combined action of multiple people that all benefit from it. in theatre, you need help from everyone, the propmakers, the actors, and those who write the script and so forth. everyone must work together in order to benefit, thus causing Synergy

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.