The best way to continue Giovanna's evaluation is with B. text evidence of Niemand's argument.
Explanation:
In her evaluation of an article, Giovanna must first state her opinion and then support it by presenting evidence taken from the very article she is evaluating. That way, she can defend her point of view and try to convince readers that she is correct in her opinion.
Giovanna has already revealed Niemand's claim when she said his made assertions that "climate change is not affected by human activity." Thus, we now know what his article is about. However, in Giovanna's opinion, his assertions were unsubstantiated. For readers to understand why she thinks so, she must provide text evidence from Niemand's argument. She should choose the passages she thinks will prove her point and add them to her evaluation, properly discussing their lack of substance.