The word ”effrontery” means shameless boldness or audacity. Therefore, the correct answer is option 1.
• audacity (1): This is correct; it means boldness or daring.
• civility (2): This is incorrect; it refers to politeness and respect.
• impetuosity (3): This is incorrect; it refers to acting quickly without thought.
• affluence (4): This is incorrect; it refers to wealth and abundance.