Which of the Following Students Provides the Best Summary of the Research

Which of the following students provides the best summary of the research about using a cell phone and paying attention while driving?

A) Hans: "As long as you talk on a hands-free cell phone, you can still pay full attention to driving."
B) Gail: "As long as you are an experienced driver, talking on a hand-held cell phone or a hands-free cell phone will not distract your attention."
C) María Luisa: "Talking on a hands-free cell phone can distract your attention."
D) Josh: "Fortunately, drivers are not distracted when a passenger is having a conversation on a phone."