with a drawing, the quality of line and the nature of shading are very much affected by the of the support.

the correct answer would be, Texture.

Explanation:

With a drawing, the quality of line and the nature of shading are very much affected by the Texture of the support.

Texture is the surface on which the drawing is being made or drawn. In simple words, just for understanding, we can say that texture is the background on which the drawing or sketch is made. If the texture of the drawing is supportive, the lines and shades of the drawing will go solid with it, otherwise bad texture can ruin the whole drawing as well.

For example, if you want to draw a sketch, the texture should be smooth, white in color, and plain. This will help the artist to sketch beautifully by applying all shades and proper lines on the surface.