|Question 9Verbal

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The Late Devonian mass extinction happened approximately 365 million years ago, when about 75 percent of species (including many species of corals) died off. Researchers have proposed the effects of global cooling as one mechanism that may have brought on this mass extinction. But mass extinctions, while abrupt in geological terms, unfold over thousands or millions of years: it’s likely that multiple factors drove widespread species loss.
Based on the text, the author would most likely agree with which statement about the Late Devonian mass extinction?
It occurred over a long period of time and probably had multiple causes.
A
It likely involved the extinction of more species than is typically believed.
B
It is hard to detect in Earth’s fossil or geological records.
C
It was discovered only recently and is poorly understood.
D