Humans were long thought to have begun occupying the Peruvian settlement of Machu Picchu between 1440 and 1450 CE. However, a team led by anthropologist Dr. Richard Burger used accelerator mass spectrometry to uncover evidence that it was occupied ________ 1420 CE, according to Burger, humans were likely inhabiting the area.<br/><br/>Which choice completes the text so that it conforms to the conventions of Standard English?
MM
Mashaal Masha
Jan 07, 2024
Humans were long thought to have begun occupying the Peruvian settlement of Machu Picchu between 1440 and 1450 CE. However, a team led by anthropologist Dr. Richard Burger used accelerator mass spectrometry to uncover evidence that it was occupied ________ 1420 CE, according to Burger, humans were likely inhabiting the area.
Which choice completes the text so that it conforms to the conventions of Standard English?