Answer :
The answer would be D because A, B, and C are not relevant to her side of the argument. Those three letters really refer to the opposing side rather than her's. D is the only answer that seems logical for her to pick because it could be information that could be used on her side of the argument.
Your Answer:
D.) Dr. Meryl Ain says, "smartphones can be powerful learning tools, instantly connecting users to information."
Hope this helps y'all :)