Answer:
Option C Social Factor.
Step-by-step explanation:
Social factors includes the people's changing perceptions and preferences. In this case the customers of social networking was highly oriented towards using MySpace and started using Face-book, thereafter Whats-app was also among their priorities, Insta-gram stepped in and we saw a great market share capture by it. So the people preferences changes with time and this is Social factor (PESTLE Analysis).