What change occurs when white is added to green made from yellow and blue?

Correct answer: Green will become lighter

The governing concept is a tint. Green made by combining yellow and blue is a secondary colour in the traditional pigment model. Adding white does not change it into a primary colour or turn it red; instead, white increases the reflected light and produces a lighter version of the same colour, called a tint. Adding black would make green darker and create a shade. Therefore, the direct result is that green becomes lighter, so option B is correct.