Which of the following statements best expresses the central idea of the article? a. teenagers' brains are more easily distracted because they use social media and text while driving more often than adults. b. teenagers are more likely than adults to take risks for money based on a study in iowa city. c. teenagers are more prone to distraction because they are more attracted to or focused on potential rewards. d. teenagers often do not realize why they want rewards because their brains are still developing.