sudden volume changes are known as subito dynamics
The majority of operas were made around the Orpheus legend. The most famous of these was the earliest performance of Monteverdi's "L'Orfeo." in 1607. Nevertheless, I highly believe the answer to this is B. Orpheus.
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Explanation:
https://www.bing.com/th?id=OIP.sUxucBP59jYQbiKPC1_VEAHaEK&w=200&h=110&c=8&rs=1&qlt=90&o=6&dpr=2.25&pid=3.1&rm=2
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I'm not sure if this is what you wanted but hope this helps.