Having launched her first search campaign, asha wants to know just how many calls are being generated from the number in her ads, on her website, or clicks on a phone number on her mobile website. what conversion source should she track?

What conversion source should she track? Phone calls. Due to phone calls generated being the most important item Asha wants to track, the first conversation source she should track is for phone calls. When Asha tracks these, she'll be able to see how many clicks there are on the phone number and how long the calls are taking to gage interest.