The rain fell, the sun shone, and the flowers began to bloom is the right answer because each phrase in that sentence is written in the same structure. Hope this helped!
Engineers will often use reverse-engineering to solve problems. For example, by taking things apart to determine an issue, finding a solution and then putting the object back together again. Engineers know how things work, and so they constantly analyse things and discover how they work.
I think it is A: It makes clear to the reader that the narrator is making an ironic statement.
