Answer: You know this stuff inside and out, backwards and forwards. What are you so nervous about.
Explanation:
Justin is aware that Becky cannot focus, because she is nervous over her driving test. Justin wants her to pass the test, which is why he shows empathy and reminds her that she is prepared for it -<em> "</em><em>You know this stuff inside and out, backwards and forwards"</em><em>.</em> He wants to make her believe in herself by reminding her of all the effort she put into practicing for the test. Justin's words encourage her, and she feels less anxious.
