What primary elements of light helps the observer see three-dimensions

In contour drawing crossing lines is one way to indicate this

Which statement about landscaping by thomas cole, vincent van gogh, shen zhou, and ansel adams are true? choose all answers that are correct. a. adams manipulated values in his photographs to capture how he felt about a landscape. b. cole made realistic landscapes that lack symbolic or moralistic meaning. c. shen used expressive brushstrokes to build up objects and used washes to fill larger areas. d. van gogh used intense color, bold brushwork, and distorted forms to express his emotions.

What made this representation of the virgin mary revolutionary