What happens when increasing amounts of white are added to the primary colour red?

Correct answer: Progressively lighter pink tints will form

White added to red creates a tint, and increasing the proportion of white progressively raises the value or lightness of the mixture. The visible results form a sequence from strong red through pink shades toward a very pale red or near-white appearance. The hue relationship remains connected to red; no blue or yellow is introduced to make green or orange. Therefore option A is correct, while the other choices confuse lightening with hue change, intensification, or secondary-colour formation.