A、They became more excited. B、They became bad-tempered. C、They didn’t know what to do. D、They shifted their attention. C

M: Michelle Hackman, a high school senior, won second place in a national science competition. She conducted a study to see what happens when a teenager is deprived of his or her phone. She joins us on the phone. Thanks very much for being with us.
W: Thank you so much.
M: And what did you do—just took cell phones out of teenagers’ hands and started studying them?
W: Yeah, I based my research on a market research study that made the claim that the reason we can’t separate from our phones is that we become anxious. And so I wanted to see whether I would see that sort of behavior if I were to do that experimentally, just took the cell phones away from kids.
M: And?
W: And I actually found when I took them away, the kids became under-stimulated, and almost didn’t know how to entertain themselves.
M: Oh. How did you observe?
W: I used a biological feedback device. I observed levels of stimulation. And I literally saw that subjects who had phones taken away from them experienced decreases in their stimulation.
M: Now, I have been told you’re blind.
W: Yes.
M: How did you conduct the study?
W: I couldn’t actually conduct the study myself because of the readings on the biological feedback meter, I couldn’t take them myself. So I actually gathered a team of students to administer the study for me.
M: So what are you going to do? What are your plans?
W: I’m going to go to Yale in the fall to study psychology, and I will bring the cell phone research with me.
9. What happened to those whose cell phones were taken away?
10. How did the woman conduct the study?
11. What will the woman do next?