The correct answer is actually D - Spying.
The reason why D is the correct answer is because during those times, musicians could be invited to parties, balls, and festive occasions that were hosted by one family or another family or nobility or any other important group of people who could pay them a hefty sum to tell them what another family was doing and vice versa. That is why their job offered them the opportunity to work as part-time spies.
The adopted it because they feared that if they were to intervene it would escalate. Also because the non intervention would prevent a war from happening in the European side of the world.
(let me know if you need a more detailed explanation)
The answer is D. Europe, who had been the world's previous superpower, was destroyed by World War 2.
Answer: his first principle is that his own mind exists.
Explanation:
