The correct answer is Pathos.
Pathos is a term that refers to the emotions of an audience, and its a communication tool used to deliver these feelings in a passionate speech. This tool may also include metaphors and anecdotes.
In the excerpt from the Declaration of Independence, the speaker expresses his emotions by acussing the King of England for his unjust ruling over the colonies. The speaker provides evidence of these crimes as a form of anecdote and delivers his ideas emotionally by making use of descriptive nouns such as desolation, tyranny, cruelty, and perfidy.