1. 1번

They are american options and you can choose to exercise any time prior to expiration

2. 3번

Buyer

3. 1번 

binance futures

4. 1번

last price of perpetual contract on binance futures

5. 2번

Put options

6. 1번 

The premium will be deducted once he has placed the order

6-1. 3번

Futures account

6-2. 3번

6,991 usdt

6-3. 2번

9 usdt

6-4. 4번

6,991 usdt

6-5. 3번

-4 usdt

7. 1번

yes

8. 1번

yes

9. 1번

manage your transaction risks and avoid short-term speculation