Besides A, every other choice alters the meaning of the sentence.
Slash out the modifiers and just keep the main sentence.
A. the long-whiskered owlet, was spotted in the wild for the first time in 2007 by researchers monitoring a private conservation area in Peru's northern forest
Slash out the modifiers and just keep the main sentence.
A. the long-whiskered owlet, was spotted in the wild for the first time in 2007 by researchers monitoring a private conservation area in Peru's northern forest
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