Answer:
They use your data to provide personalised ads.
Explanation:
The implications of social media companies making use of your data which includes your cookies, browsing history, essentially your digital footprint is that they are able to send you personalised ads.
This is why when you search for a particular item on the net, the next half hour, you start getting buy recommendations for that item.
Your answer should be B) That Romeo has come to do some mischief
Parenthetical citation and works cited.