Nothing is underlined so I can't help you, please comment what is underlined so I can help :)
The answer would be the first one because it sounds formal where as the other ones are less formal and sound as if you are talking to a friend
The answer is:
because they are powerful calls to change that define their causes
According to the Declaration of Independence and the Declaration of Sentiments, American citizens are acknowledged and have the right to put an end to harmful methods of government. As a result, both Jefferson and Stanton authorize people to take action when their freedom, security and contentment are at risk.