(A) unsure or uncertain of a task
(B) unsupportive of a task
(C) ** committed or devoted to a task
(D) lazy or indifferent about a task
EXPLANATIONS BELOW
Concept note-1: -The “unfinished work” to which Lincoln refers, “the great task remaining before us, ” is to put into practice the proposition to which this nation was and is dedicated: that all men are created equal. Miraculous though it was, the Constitution had left that work unfinished.
Concept note-2: -“Now we are engaged in a great civil war, testing whether that nation, or any nation so conceived and so dedicated, can long endure. We are met on a great battlefield of that war. We have come to dedicate a portion of that field as a final resting place for those who here gave their lives that that nation might live.