A student needs to create a bright yellow-green. Which mixture is most suitable?

Correct answer: More clean yellow and less clean blue

The governing concept is controlling hue and saturation through the proportion and cleanliness of pigments. Yellow-green becomes brighter when a clean, vivid yellow is dominant and a smaller amount of clean blue shifts it toward green. Option B is correct. Muted pigments reduce brightness, equal green and red tend to neutralise each other, and yellow with violet introduces a complementary relationship that can make the mixture dull or brownish rather than bright yellow-green.