<span>The avant-garde are people or works that are experimental, radical, or unorthodox with respect to art, culture, or society. So I would go with option A.</span>
The correct answer is: [D]:
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"<span>Lake Erie is named for the Erie tribe of Native Americans; they lived on the lake's southern shore."
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E. financially successful
Prosperous (adj) successful in material terms, flourishing financially.
I believe the answer is joyful and positive. The answer shows off America’s freedom in a positive way. With things such as “singing...melodious tunes.”