Final answer:
The mentioned lines allude to the Christian theme of redemption through Jesus Christ, the 'Second Adam,' who is prophesied to restore humanity to the divine grace lost by Adam and Eve, corresponding to answer 'b) Arrival of a heroic figure to lead humanity.'
Step-by-step explanation:
The lines "With loss of Eden, till one greater Man/Restore us, and regain the blissful seat" allude to Christian theme of salvation and redemption through Jesus Christ, who is often referred to as the 'Second Adam.' Considering the cultural and religious context, these lines from literature refer to the anticipation of a savior who would restore humanity to the divine grace lost by Adam and Eve. Hence, the correct answer to the question is 'b) Arrival of a heroic figure to lead humanity,' as it signifies the coming of Christ to redeem mankind and re-establish paradise, an event foreshadowed in religious scripture.
Christian theology celebrates this belief, where Christ's sacrifice on the cross made it possible for humanity to be restored to grace, contrasting with the original sin of Adam and Eve that led to their exile from the Garden of Eden. This narrative is central to Christian doctrine, as reflected in various artistic and literary works that explore themes of fall and redemption, including paradise, salvation, and humanity's eternal quest for divine favor.