Question #1
only one answer correct per question
What is the authors’ final conclusion about the origin of SARS-CoV-2?
It definitely did not come from a lab, either by genetic engineering or by passage of natural viruses.
It definitely did come from a lab, by passage of the precursor virus.
It definitely came from an animal virus.
They cannot definitively make any conclusions without more data.
References:
Title: The proximal origin of SARS-CoV-2
https://www.nature.com/articles/s41591-020-0820-9
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