The correct answer is:
After doing the ressearch about Johnson's actions, the one that surely brought a huge impact on reconstrution was that he granted amnesty to former Confederate soldiers.
The feature is the rule of law. Unlike people, legislature cannot be affected by passion and if law rules then everyone is equal in the eyes of law. If a man rules and has absolute power, they can be affected by various things that might make them abuse their power, and law cannot abuse power on its own.
The answer is a because the declaration wasn’t adopted for the other reasons so through process of elimination it’s a