I am confused here.
August and approbation are also a correct pair for this question.
Having unlimited confidence in her own abilities can make her arrogant, but impressive at same time. Approbation also correctly goes with the same reasoning as she has high praise for others.
chatGPT is also saying same thing . I saw Gregās explanation which was too short, and it did not address this ambiguity.
Please clarify. Thankyou!