Find ways to understand something better
Answer: N. Scott Momaday - who is a native American himself - finds ironic that white people claimed that they were arriving into the "new world" when in reality there were ancient civilizations already living on those lands, and this claim is one that they have continued to sustain up to this day.
When Europeans arrived in 1492, there were very large Indian populations scattered all across America with a rich history and culture, an element that vastly defers the logic of the discovery of a "new world".
This line from Sylvia Plath poem “lady Lazarus “, one of many iconic of modern American poetry.
The answer would be D, an appearance by Halley's Comet, as it only appears once every 75 years.