Choice C is the best answer. In Passage 1, the author cites psychologist Patricia Greenfield's finding that"'every medium develops some cognitive skills at the expense of others'" (lines 29-31,"She...others"). In Passage 2, the author states "If you train people to do one thing (recognize shapes, solve math puzzles, find hidden words), they get better at doing that thing, but almost nothing else"(lines 71-74,"If ...else"). Both authors would agree than an improvement in one cognitive area, such as visualspatial skills, would not result in improved skills in other areas.
Choice A is incorrect because hand-eye coordination is not discussed in Passage 2. Choice B is incorrect because Passage 1 does not suggest that critics of electronic media tend to overreact. Choice D is incorrect because neither passage discusses whether Internet users prefer reading printed texts or digital texts.