Answer:
It means that people show their true colors when there by theirself and they arnt typically fake around other people but only they know their true selves its just like the expression "What you do in the dark always comes to light"
Explanation:
can you please provide the story?
Hello.
The preposition in the sentence is under. A preposition is a word meaning where the noun is in the sentence, the noun is tree, the preposition is under.