Sentence 1: Katie decided to learn to make yogurt. 
 Sentence 3: It was very confusing and difficult 
 Sentence 4:  Katie threw it away and decided to just buy yogurt 
 Sentence 5:  It tasted better when it was from the store 
 Option 1: She bought a gadget that was supposed to help her. 
 Option 2: She wanted to find a gadget that could help her.