Final answer:
James Thurber uses the characterization of the princess in 'Princess and the Tin Box' to critique societal materialism and to explore themes of values and authenticity.
Step-by-step explanation:
The princess's character in Princess and the Tin Box by James Thurber is utilized to articulate a critique of materialism and greed in society, which is the central theme of the text. Thurber's choice to portray the princess as someone who ultimately chooses the tin box filled with jewels over simpler, heartfelt gifts satirizes the societal inclination towards material wealth over genuine affection. Therefore, the correct claim which answers how the princess's characterization reflects Thurber's overall purpose for writing the text is: The princess's traits demonstrate a message about society's materialism, aligning with Thurber's thematic exploration of values and authenticity in a modern world.