Answer:
While I was smoking my cigar, a fire engine came roaring around the corner.
Explanation:
In the third option it's showing the time when the fire engine came and that too in correct form of words.
Well, from my experience, it would be prewriting. Prewriting is where you come up and brainstorm ideas. Its when you scribble ideas and write out a plan on the direction that you want your paper to head to, where you would write a list or draw a picture on key points you want to hit on the paper.
The answer is A I hope I helped you with no answer
1. study
2. is known
3. will still be
4. decide to buy
5. knew
6. would not have gotten
7. must choose
8. would never have occured
9. became
10. will be produced
11. will be
12. is