Which colour should be greater to make a blue-dominant green?

Correct answer: Blue

Green is the secondary colour produced by mixing blue and yellow. If the mixture must look blue-dominant, the amount of blue should exceed the amount of yellow, so option C is correct. Increasing yellow would shift the mixture toward yellow-green. Red and orange are not the two primary components used to form green in this traditional pigment model. The colour’s bias follows the component present in the larger proportion.