Which of the following was one of the key principles endorsed by the pre-raphaelite brotherhood?

the one that was one of the key principles endorsed by the pre-Raphaelite brotherhood was : Art requires rote learning of tradition and formula. To put it simply, art is an expression of how the artists see the world around of them. In the process of creating that perception, the culture and society that surround the artists will have a very big impact in shaping it

White flour this don't make sense

The answer is a : varying the size of objects or subjects, so that some are smaller than others and the illusion of depth is created.hope this : )