Final answer:
According to the poem, our best hope of living on after death is religious salvation.
Step-by-step explanation:
According to the poem, our best hope of living on after death is c) Religious salvation. The poem mentions the ability of humans to elevate their lives through conscious endeavor and to affect the quality of each day. It suggests that achieving religious salvation is a more glorious way of living on after death than achieving fame and glory, being remembered by loved ones, or immortalizing oneself in art and literature.