I believe the answer is: C. Death
In western society, footman refers to the people who had the duty to admitting visitors to a certain place.
<span><em>I have seen the moment of my greatness flicker, . .. </em>could be interpreted into the fact that the writer has already past his prime age.
So, eternal footman could be interpreted as death that await the writer before he leave the realm of the living.</span>
The First and Second Estates opposed to change because they were wealthy and had to pay little taxes because of the Third Estate. They had privileges, while the third estate did all the work.
Bill of Rights is the right answer
