What happens when red is reduced and violet is increased in red-violet?

Correct answer: The colour shifts toward violet

The governing concept is the relationship between component proportion and colour direction. Red-violet lies between red and violet. If red is reduced and violet is increased, violet becomes visually dominant, so the mixture shifts toward violet. It cannot move toward red because red has been reduced, and yellow or green are not components being strengthened. Thus, option B is the unambiguous answer.