6. The primary differences between painting and drawing are: C The use of a brush and the medium used contrast in light and dark Large masses of tone and shadow Color

## Step 1<br />The question is asking for the primary differences between painting and drawing. The options provided are:<br />A. The use of a brush and the medium used<br />B. Contrast in light and dark<br />C. Large masses of tone and shadow<br />D. Color<br /><br />## Step 2<br />Option A, "The use of a brush and the medium used", is the most accurate answer. This is because painting and drawing are two different forms of visual art that are differentiated by the tools and materials used. Painting typically involves the use of a brush and various paint mediums, while drawing is usually done with pencils or other drawing tools on paper.<br /><br />## Step 3<br />Options B, C, and D, while relevant to both painting and drawing, do not distinctly differentiate the two. Contrast in light and dark, large masses of tone and shadow, and color are elements that can be found in both painting and drawing. Therefore, they are not the primary differences between the two.