Context: My mother vowed several years ago that she would never own another pet . " They just break your heart when they die and I ca n\'t take it anymore . " I agree with her .
Question: What is the reason I came to agree with my mother about pets ?
Option 0: None of the above choices .
Option 1: A pet is the reason that my mother died .
Option 2: I learned how messy pets are .
Option 3: I experienced my dog dying .
Answer: 3