Answer:
we use cause and effect reasoning in a persuasive essay to know why something happened
Step-by-step explanation:
In a persuasive essay you present your opinion and try to get your readers to agree with your point of view.
Cause-and-effect reasoning is generally used in a persuasive essay to give an answer to the why question. it tells us why something happened. It tells us how one event resulted into another event. This is the cause-effect.
The writer gives the reason for a decision or action and tells the consequences for this.