Question



Figure 1.
According to Figure 1. above, the correct rank order of social network sites from most to least popular as measured by the number of unique U.S. visitors as of September 2011 is
a. Facebook, LinkedIn, YouTube, and Twitter.
b. Facebook, Twitter, YouTube, and LinkedIn.
c. Facebook, YouTube, Twitter, and LinkedIn.
d. Facebook, YouTube, LinkedIn, and Twitter.
e. Twitter, Facebook, YouTube, and LinkedIn.

Answer

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