medium · GMAT Verbal

A marketing agency claims that its new social-media campaign increased brand awareness by 40% because the number of 'followers' on the brand's profile increased by that amount during the campaign.

Which of the following, if true, most undermines the agency's claim?

  1. The cost per new follower turned out to be somewhat higher than the agency had originally projected.
  2. A significant portion of the new 'followers' were automated bot accounts rather than potential consumers.
  3. Social-media followers are completely worthless as a marketing metric under any and all conceivable circumstances.
  4. The brand's social-media profile already had a fairly large number of followers before the campaign began.
  5. The campaign also ran on national television and radio at the same time as the simultaneous social-media push.

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