What is the benefit of drawing light measuring lines first?

Correct answer: Helps establish correct proportion of parts

Light measuring or construction lines act as temporary guides for height, width, alignment, angles, and placement. They help the artist compare parts before adding final contours, so errors can be corrected without damaging the finished drawing. Option A is correct because these guides support accurate proportion. They do not brighten colours, alter paper texture, or make an image permanent; those effects require different materials or processes.