A. Colourful
B. Jovial
C. Bright
D. Mournful
✅ The correct answer is option D.
Colourful : having much or varied colour; bright.
Colourful : having much or varied colour; bright.
Jovial : cheerful and friendly.
Bright : giving out or reflecting much light; shining.
Mournful : feeling, expressing, or inducing sadness, regret, or grief.
Doleful : expressing sorrow; mournful.
Synonym of Doleful is Mournful