I think it's the second one.
Before she was born, he was a missionary in India, and that was how she got her name. The Preacher did not call her India Opal though; he called her by her middle name, Opal. Opal and Winn-Dixie walked to the trailer park where she lived.
When you are a child, if you grow up in an abusive household, you learn to be more aggressive. However, if you have a loving household, you're more likely to be considerate of others. There are many other examples, such as someone smiling to you could save your life, while someone being rude could end it. It only takes one gesture to change someone's world.
