What could Harmonious colors be? A. Yellow, Violet, Blue
B. Yellow-Green, Yellow, Yellow-Orange
C. Blue-Green, Violet, Red-Violet
D. Orange, Green, Blue

i have no idea

Explanation:

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Analogous color schemes use colors that are next to each other on the color wheel. They usually match well and create serene and comfortable designs. Analogous color schemes are often found in nature and are harmonious and pleasing to the eye.

Explanation:

A harmonious colour is one that sits next to another on the colour wheel or very close to it for example, red is near rust, which is near terracotta. It's very easy to create a balanced, unified scheme that is pleasing to the eye using harmonious colours.

answer; i believe the correct answer is "he who gladly serves"

the previous answer given.