How are veins of a leaf shown with line?

Correct answer: With thin branching lines

Answer: A, with thin branching lines. A leaf normally has a main central vein and smaller veins that branch from it toward the edges. In a drawing, thin lines arranged in this branching structure can suggest the leaf’s internal pattern and natural growth. The lines do not need to copy every tiny vein; the main vein and a few carefully placed branches are often enough for recognition. Option A is correct because thin branching marks resemble the visible vein pattern. Option B is incorrect because a thick square line does not follow the organic structure of a leaf. Option C is incorrect because folding paper changes the paper but does not draw or show the veins. Option D is incorrect because covering colour may hide information rather than represent the vein pattern. The artist should first draw the leaf outline, place the central vein, and then add smaller veins that taper and branch outward. Avoid making every branch equally dark or perfectly mechanical, because natural forms usually have variation. Memory cue: leaf veins spread like a delicate tree from a central line.