1.which quotation from the speech best develops the central idea that slavery is an unfair institution?

a.“yet, if god wills that it continue until all the wealth piled by the bondsman's two hundred and fifty years of unrequited toil shall be sunk, and until every drop of blood drawn with the lash shall be paid by another drawn with the sword,…”

b.“the progress of our arms, upon which all else chiefly depends, is as well known to the public as to myself, and it is, i trust, reasonably satisfactory and encouraging to all.”

c.“it may seem strange that any men should dare to ask a just god's assistance in wringing their bread from the sweat of other men's faces, but let us judge not, that we be not judged.”

d.“to strengthen, perpetuate, and extend this interest was the object for which the insurgents would rend the union even by war, while the government claimed no right to do more than to restrict the territorial enlargement of it.”