Which element is used first to show the outer boundary of a mountain?

Correct answer: Line

Correct answer: C, line. When an artist first draws the outer boundary or contour of a mountain, the mark separating the mountain from the sky is a line. It establishes the silhouette, direction and basic outline before details such as shading, colour or surface marks are added. A, value, means the lightness or darkness of a colour and is used for shading or tonal contrast. B, texture, describes the appearance or feel of a surface, such as rocky or smooth. D, hue means the basic colour family, such as blue, green or red; it does not itself define the boundary. A useful rule is: outline or contour points to line; light and dark point to value; surface quality points to texture.