To analyze the author's purpose regarding Azy's vocabulary mistake in the think tank, we need to consider each option:
A. The mistake is a major setback in Shumaker's research. - This suggests a negative view of the mistake, indicating it significantly hinders progress.
B. The mistake proves that orangutans resist learning. - This perspective implies a defeatist view, suggesting that the mistake reflects a broader issue with learning capabilities.
C. The mistake helpfully reveals the way Azy's mind works. - This option takes a more positive approach, indicating that the mistake offers insights into Azy's cognitive processes and thought patterns.
D. The mistake suggests that Azy is bored with learning. - This interpretation implies a lack of interest or engagement on Azy's part, portraying the mistake as a sign of disinterest.
Based on these interpretations, the answer that aligns best with an author's purpose of fostering understanding and insight would likely be C. The mistake helpfully reveals the way Azy's mind works. It indicates that the author values the mistake as a learning opportunity rather than merely a failure or setback.