Which dialogue most effectively develops the conflict? "I guess I should babysit," Caroline admitted, "because you can't change your plans as easily." "If you think I'm babysitting, you've got another thing comin!" Rachel hissed at her younger sister. "I'll babysit this time," Caroline said, "if you'll promise to watch him the next time." "You probably think I should babysit because I'm older, right?" Rachel asked.