What technique do artists use to create rhythm? a) one-point perspective b) overlapping c) shading d) repetition

Artist use C) Shading to create rhythm.

It’s actually D) Repetition. By repeating a motif, of the singular element in a pattern, the artists can create a sense of movement/rhythm. Shading creates depth, not rhythm.

∵they depict sad lonely people  ∵  figures in them have long limbs and faces, similiar in style to paintings by el greco.