What is the benefit of adding colour in small amounts while mixing?

Correct answer: The mixture remains controlled

The governing concept is gradual colour mixing: adding pigment in small amounts gives the artist better control over hue, value, and intensity. If too much colour is added at once, the mixture may become too dark or too strong and may be difficult to correct. Therefore, option B is correct because gradual addition allows careful adjustment toward the desired shade. The other options describe effects that do not result from controlled mixing.