The question above has multiple choices as listed;
a. Source and Medium
b. Campaign and Ad Content
c. Campaign and Medium
d. Source, Medium, Campaign, and Ad Content
The correct answer is A. Source and Medium
Source and medium combines the dimensions source and medium. Anyone referred to a website has an origin or a source. Examples of possible sources include Google, Facebook.com, and direct for those who typed your URL directly. Every referral, on the other hand, has a medium and possible examples of medium include organic, cost per click, referral, email, and none.