Answer:
C.
Step-by-step explanation:
The given excerpt is taken from 'Declaration of Independence.'
The rhetoric device used in the given excerpt is ethos.
Ethos is a rhetoric device which appeals to ethics or credibility of the speaker. To make his appeal of credibility, the speaker uses 'ad hominem argument', which means that he would make an argument against the opposition man or person, instead to making his/her own point of view. The speaker, using this type of argument, reproaches the character and personality of the opponent.
In the given excerpt, the speaker has used rhetoric device of ethos. The speaker is using 'ad hominem argument' to make himself appeal credible to his audience. He is making an argument by critizing the opponent, that is Britain King.
Thus option C is correct.