Rhetoric is an example of persuasion.
The purpose of comparison shopping is: attempting to find the best deal on a product
In comparison shopping, we utilize the service of a website that exist specifically to provide comparison data regarding a certain product that made by different competitors. The website would provide many crucial information such as prices, pro and cons, user ratings, etc.
Revival is the correct answer. Generally religious revivals are used to revive the church within the community.
I believe your answer is B