Timbre is the correct answer
shellac is commonly used in nail salons, it's a different kind of coating that lasts longer than than regularly used nail polish. but to answer your question, my guess would be printmaking because they do use shellac and i know for a fact that they use glue. hope i helped :)
Answer:
the repeated image and the contrasting colors
Social protest is usually executed by the general population. It is intended to create awareness of an issues or several issues in order to increase support and further change. Political motive is what drives politicians and leaders to instill changes or take positions on subjects in order to further their power.