After that, the back-seat chattering stopped. When Mr. Hampton looked into his rearview mirror he saw his daughter sending a text message on her cellphone. “Katie, you shouldn’t be texting all the time,” Mr. Hampton recalled telling her. “Your friends are there. It’s rude.” Katie rolled her eyes again. “But, Dad, we’re texting each other,” she replied. “I don’t want you to hear what I’m saying.” Mr. Hampton turned his attention back to the freeway. It’s a common scene these days, one playing out in cars, kitchens and bedrooms across the country.
- What does the last sentence mean exactly?
- What role plays the word "one" in the last sentence?