Sentence 1: Margo began babysitting her mother's employer's son. 
 Sentence 3: She was bewildered by the photo 
 Sentence 4:  Margo questioned her mother's boss about the picture 
 Sentence 5:  She was reassured her that it belonged to her eldest son 
 Option 1: She found a disturbing photograph in the house. 
 Option 2: She found a photo of a happy dog frollicking at the park.