Final answer:
Social media is a category of websites that allow users to interact with each other and share information. It includes email, chat, and social news sites.
Step-by-step explanation:
Social media is a category of websites that allow users to interact with each other and share information. It includes platforms like email, chat, and social news sites. Email allows users to send messages to each other, chat platforms enable real-time communication, and social news sites allow users to share and discuss news articles. These platforms are examples of social media because they facilitate social interaction and information sharing among users.