What is shading with lines crossing each other called?

Correct answer: Cross hatching

The direct answer is A, Cross hatching. In drawing, hatching means making shade with repeated lines. When one set of lines is crossed by another set, the method is called cross hatching. The step-by-step idea is: first draw lines in one direction; then add another group in a different direction so the lines intersect; adding more lines or placing them closer together generally makes the value appear darker. Option A is correct because crossing lines are the defining feature of cross hatching. Option B, Stippling, creates tone through separate dots, not intersecting lines. Option C, a colour wheel, is a circular arrangement used to study colour relationships; it is not a shading technique based on crossing lines. Option D, shape making, is a broad activity of forming an outline or form, not the specific name for this line method. Remember that ordinary hatching may use parallel lines, while cross hatching adds a second crossing direction. A common mistake is to choose hatching whenever lines appear; check whether the lines cross.