How will violet appear when more blue is used in the mixture?

Correct answer: Bluish violet

Violet is produced by mixing red and blue. If the quantity of blue is increased, blue becomes the dominant influence in the mixture, so the violet shifts toward a bluish appearance. Therefore, option B is correct. More red would create reddish violet, while yellowish or greenish violet is not the expected result of adding blue to a red-blue mixture. This illustrates colour mixing and relative colour dominance.