Answer:
No, imagery would be if there was a description of the roses, by sight, smell, or etc.
Explanation:
I'd say that the rescued words would be
save, save from danger, save the life of, come to the aid of;
free, set free, release,liberate
First question: 4, because this seems to fit the title the best.
Second question: I would need to read the book to know, which is what you should do.
Third question: 1 or 2
Fourth question: 2
It was hard to answer these because of your lack of spacing, but hopefully these are right.
Good luck!
-RxL