What is the result if more red is used in a red and blue mixture?

Correct answer: Reddish violet

Red and blue combine to produce violet in the traditional paint system. When more red is added, the mixture shifts toward the red side of violet and appears reddish violet, making option B correct. Bluish violet would be expected when blue is present in the greater amount. Yellow-green requires yellow and blue, while orange requires red and yellow, so options C and D do not follow from the stated mixture. The key principle is that the dominant component affects the hue.