I would say C. a literary device because pathos is like a quality that causes people to pity or show empathy towards you. You may use this as a tool as a writer to make the reader feel a certain way about your characters or victims of an event. It can be used to better understand and better convince readers of your opinion.
White. White is a colour, which is an adjective. It tells you that the specific clothes are white, describing them. Remember that adjectives are descriptive words :)
