Answer:
d.
Step-by-step explanation:
Out of all of the options listed, the only choice that is actually a fact would be that the minimum age for some social media sites is 13. This is because this age restriction is not set by the social media sites but instead by the Children's Online Privacy Protection Act (COPPA) within the US. The other options are all personal opinion, the most accurate of which is that "Social media is a great way to communicate." which there can still be someone with an opposing argument which means that it is not factual but instead it is an opinion.