Briefly summarize Sheed's explanation as to why Jesus' self-sacrifice and death, in essence, was redemptive; why "it could be set against the sin of the race."
a) Because it absolved individuals of their personal sins. 
b) Because it provided a model of selflessness for others to follow. 
c) Because it demonstrated God's love and forgiveness for humanity. 
d) Because it could be set against the sin of the race.