What is the difference between shading your graphite and blending , stupid question LOL but i'm an artist and i am in need

Symbolic proportion is a. the relative size relationship between religious figures and other part of a work of art. b. the apparent disproportionate relationship between objects within a piece. c. the manipulation of visual characteristics in order to emphasize one specific figure. d. the use of geometric arrangements to show religious imagery or to tell stories. select the best answer from the choices provided