Answer:
truei spend many seconds thinking about this and I realize it's true
In my opinion, they do not only reveal what will happen, but also manipulate events. When Macbeth approached the witches, they could have concealed the truth from him and just let the events unfold, but they didn't do it. They told him about the prophecy, thus initiating the events that soon followed. If they hadn't told him the truth, Macbeth might have never killed Banquo, Duncan, and the rest in order to become king. So yes, they manipulated events and caused a great tragedy.
The sentence that is an example of chronological structure is option D.
"Some time in the next 100000 years, glaciers will cover all of Manhattan."
When providing the historical background to a topic, it is required to describe events in chronological order, or in the time sequence that they occurred. This is commonly seen in academic essay writing. Chronological sentence should have a time reference.