Sentence 1: Dani was using her cell phone. 
 Sentence 3: She decided to check it out and downloaded it 
 Sentence 4:  It turned out that was a virus 
 Sentence 5:  Dani immediately deleted it and cleaned the virus from her phone 
 Option 1: Her anti-virus filter warned her that an app was dangerous so she didn't download it. 
 Option 2: She received a notification about a new app.