Hi again☺
I believe it is the last choice, "and dares to claim the sky..."
It shows that the bird has a daring, or brave character.
~Elisabeth
Think of it like this
Internal: A force inside yourself
External: A force outside of yourself
So if there an external force, it’s a force from outside so an example would be bullying. You wouldn’t want to go where you are being bullied so that would be an outside force affecting you.
