I would say C. “was”. It’s definitely not “am”, because that just sounds completely wrong. It’s not “are” because that sounds a bit wrong, too. It can’t be “were” because it’s only referring to one group, not many groups. The only answer it could be is C.
<span>C. It can be used only for research projects.
The writing process can be used for any type of text, not just research projects.
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Trees and plants release oxygen. As the main source of oxygen for us, most animals would likely die, including us.
Well it depends on her desire
