Answer:
1. The knight is 3 points
2. A rook
3. No
4. Because it is blocked on all sides
5. The better option would be the bishop
6. Because there are no threats when you capture the bishop; it's a free piece. The rook, on the other hand, will be taken by the queen, putting the king in check. He cannot take the queen becuase of the knight, which will force your opponint to take the queen with the starred rook. You just lost a valuable piece. After, you can take it back with the knight, but then the king will just take it.
Step-by-step explanation:
The explanation is already there.
Hope this helps!