Answer: 2 You are most yourself when no one is watching.
3 Dark and troubled times bring out a person’s true nature.
4 Your true nature is on the inside.
Explanation: The writing prompt is a metaphor for "you are your true self when no ones looking" and it can also mean that the most difficult times brings out someone's true self. In both, we can interpret that if someone was maintaining an image that is not themselves, their true self would be revealed.