Flashback - a literary device often employed to recall a previous event or memory in a character's mind. This device allows for background knowledge to be expanded for events that do not take place chronologically in the story arc. Often are used in first person point of view.
Without water, the plant will die.
A comma is necessary between the two clauses to connect the sentences.
Hope this helps :)
1. The race, therefore, was equally challenging to all the contestants.
2. Are you going to join us for tea, Mrs. Collins?
3. The rowers, of course, were exhausted after the three-hour race.
Yes, I believe D is correct. That topic sentence seems to be the only one, out of the other options, to address everything in the paragraph.
