What change is most likely to appear first when a little blue is added to orange?

Correct answer: The colour intensity will decrease

In traditional pigment mixing, blue is complementary to orange. Adding a small amount of blue introduces the opposite colour and reduces the mixture’s chromatic intensity, so the orange first looks duller or less vivid. It does not become pure yellow or white; a larger amount may make the mixture increasingly neutral or muddy. Therefore option B is correct.