Vocab Check Question - Audacious and Proclivity

I submitted “rude” for the “audatious” definition question but it was marked incorrect. I believe the answer should be correct because it has the secondary definition same as the one I gave as mentioned in the vocab mountain and the vocab flashcards. Also the meaning for “proclivity” as given in vocab mountain is “fondness or likeness for something” is also closer to my understanding of the word “treasuring something”.

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