In the article "Diversity in Media Has a Positive Impact on Kids," what is the author's viewpoint about why stereotyping still persists?

A: The author thinks that children don't need exposure to a diverse selection of media images.

B: The author is angered by how young children have no appropriate programming to watch.

C: The author believes that the voices, accents, and dialects of characters are used to represent character traits.

D: The author understands that without diversity in programming, children will develop low self-esteem.