Read the paragraph from an interpretive literary analysis.

The Wizard of Oz provides an example of a universal idea that connects with most readers, that "there’s no place like home." Dorothy is lost in Oz and cannot find a clear path back to the place where she lives. However, L. Frank Baum provides a portrayal of Dorothy as a determined and courageous young girl who will do anything she can to help her friends and to get back to her family.

To revise the paragraph and make the analysis clearer, which literary term could be substituted for the underlined word in the paragraph?

allusion
characterization
imagery
irony
theme