Read Power Score CR Bible those who supports "C".
It clearly says: "Eliminate any alternate cause for the stated fact"
As argument clearly states only meteor or comet (or somewhat about Volcaniceruptions):
[b] "they concluded that a massive meteor or comet hit the Earth and caused the massive extinction of the dinosaurs"
"Cosmic bla bla" is clearly an alternate cause. Though should be eliminated.
As (D) and (E) are already out of scope, so lets get
...
It clearly says: "Eliminate any alternate cause for the stated fact"
As argument clearly states only meteor or comet (or somewhat about Volcaniceruptions):
[b] "they concluded that a massive meteor or comet hit the Earth and caused the massive extinction of the dinosaurs"
"Cosmic bla bla" is clearly an alternate cause. Though should be eliminated.
As (D) and (E) are already out of scope, so lets get
...



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