What did artist jim campbell wish to achieve with his installation photo of my mother?

Which sculpture has added expressivenessdue to its unfinished state

Which print was made using the techniques of hatch, cross-hatching, and textural lines

Artists best achieve contrast in a composition by: a. drawing with realism b. shading a drawing with dark and light values c. using drawing techniques like stippling and hatching d. focusing on line and shape in a drawing