Answer :
Personally, that which gives someone more persuasive leverage is: psychological data (the means to target an individual based on their values, fears, and group associations).
What is Psychological Leverage?
Psychological leverage refers to the tendency to capitalize on a person's emotions to get them to be persuaded on a topic. It is common knowledge that fear and emotion sell fast.
So, if a speaker can work on the psychology of those to whom he speaks, he will most likely persuade them on anything.
Learn more about psychological leverage here:
https://brainly.com/question/3951300