The brain fed on the knowledge it was receiving
Answer: (B) Undiscover'd country
Explanation: He is talking as if he dosen't know where death will lead, meaning that he is mostly talking about the undisvover'd country.
Governments are instituted among men...logos
Prudence, indeed...ethos
He has erected a multitude of New Offices...pathos
For most part of his life William Blake was not recognized as the great artist he is considered today, and it was mainly because of the lack of technology to print his engravings. He is considered as the Complete British Artist, he was a poet, a painter and an engraver, so his work needed to be seen from three angles to be fully understood.
The answer to this question is his engravings.