Which light colour can be formed by adding a little red and yellow to white?

Correct answer: Light peach

The governing concept is subtractive pigment mixing combined with the effect of a large amount of white. Red and yellow together create a warm orange-like mixture; when only small amounts are added to white, the result becomes a pale peach or peach-like tint. Therefore, option B is correct. Blue-violet and green require different pigment relationships, and the presence of abundant white prevents the result from being dark.