Answer:
Taking Notes and Planning.
Explanation:
This is a difficult question to answer because it varies per person but I would assume that it's the taking notes and planning process since this is where you would have to re-read the passages or articles and find which topics would be the best to talk about. Once this process is complete, the writing and revision would come naturally since you have already planned what you are going to write about.
Rainsford does not hold human life on the same level as animal life. For Rainsford hunting is a sport or a means to gain food, not a mere even to simply kill for the love of killing.
Zaroff's ideas counter this in that Zaroff has progressed to the point where killing humans, the most intelligent beings, has become a sport to him.
The bottom line is that the two men have different world views which influence their actions.
Some are. Some aren't. No human is very good at detecting deception.