I wrote my answer on my laptop, then took a photo and attached it. Hope it helps and it is what your looking for!
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.
Technology. Technological innovation represents the central source of society's problems in Fahrenheit 451. Throughout the book, Bradbury treats technology as inherently anesthetizing and destructive. In the prehistory of the novel, technology played an important role in the social decline of reading.
