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.
The girl had a jovially outlook on her life.
In order to be able to answer this, we'd need to know what book it is you're reading, as well as the answer choices as the question asks "which of the following best" meaning that they want you to choose the best answer from the choices they’re giving you.
Allusion is a figure of speech, in which one refers covertly or indirectly to an object or circumstance from an external context. For example, you might say to one of your guy friends, "Don't act like Romeo in front of her." that would mean you are referencing to Shakespeare's "Romeo and Juliet."