Cost per action refers to

Multiple Choice

fixed discount given to a visitor for clicking on the ad$.$

fixed amount of money pald to the site for every sale that originated from an ad posted on that site.

fixed amount of money pald to the site for every time a visitor clicks on the ad$.$

$$ fixed percentage the site gets pald for placing the ad$.$

fixed amount of money pald to the site for placement of the ad$.$

As a performance measure for social networks, the interaction rate is the

Multiple Choice

$$

number of people who connect with a post divided by the total number of people seeing the posttotal number of people who are fans of the post divided by the total number of people in the target demographic.number of people who read a post on a page divided by the total number of people seeling the post:number of people who vist the product webste and click on at least one link.