Sentence 1: Julie wanted to become a babysitter. 
 Sentence 3: She decided to go through first aid training 
 Sentence 4:  Soon she was qualified and had parents calling for her 
 Sentence 5:  She had a thriving sitter business in no time 
 Option 1: She needed an edge over other teen sitters. 
 Option 2: But her neighborhood didn't need any teen sitters.