Read this sentence, which contains a biblical allusion from the story "the lightning-rod man."

see, the scroll of the storm is rolled back; the house is unharmed; and in the blue heavens i read in the rainbow, that the deity will not, of purpose, make war on man's earth."

which of these statements best conveys meaning of the allusion?

a.
the rainbow signifies a new beginning for earth after a dark storm.
b.
god will save mankind from war and all manmade and natural disasters.
c.
god uses the rainbow as a sign of his promise never again to destroy all life on earth.
d.
the storm and the unharmed house are used to signify god’s mercy on humans.