What happens when white is added to a colour?

Correct answer: It becomes lighter

The direct answer is B, It becomes lighter. A colour mixed with white produces a tint. White increases the lightness of the colour, although the exact final appearance depends on the amount of white used. Step by step: begin with a colour; add white pigment; the mixture reflects more light and appears paler; this lighter version is called a tint. Option A is wrong because adding white does not make a colour rough; surface texture is a different property. Option B is correct because white lightens the colour. Option C is wrong because mixing colour with white does not turn it into a line, which is an element or mark in drawing. Option D is wrong because white does not erase a shape; shape changes only if the artist paints over it or removes it. Do not confuse tint with shade: tint is colour plus white, while shade is commonly colour plus black. Memory cue: white makes a tint and black makes a shade.