Answer: Adages are short sayings that express universal truths. Proverbs use images of home and family to offer practical and useful advice or lessons about daily life. Aphorisms express truth in an elegant, literary, witty, and philosophical manner and often focus on moral instruction.
The correct answer is gloomy mood.
You can see that Romeo is running away from light, drawing his curtains in order to hide it away completely. He dislikes light and day in general because it means that he cannot see Juliet during the day - they used to meet only during the nightfall, which is why he despises light.