Under Acquisition in the All Traffic > Source/Medium report, filtering by “referral” traffic, what website sent the highest numbers of users? Answer and Explanation

Q: Under Acquisition in the All Traffic > Source/Medium report, filtering by “referral” traffic, what website sent the highest numbers of users?

A) facebook.com

B) google

C) youtube.com

D) mail.googleplex.com

Correct Answer is C) youtube.com.