Are online services that facilitate communication and interaction among people who want to share information.

Social media are online services that facilitate communication and interaction among people who want to share information.

Explanation:

Social media helps users to communicate with each other. It helps users to share information, messages, ideas, pictures and images. The thoughts and ideas of many peoples are shared via social medias and they use virtual network for their connections.

This is completely based on internet and helps in quick sharing of information and other contents. Social media applications  can be used by an user with laptops, computers, smart phones,etc. There are lot of advantages of social media for business people also. They can attract customers easily through it.

the answer would be a)henry grady because he came up with the term "new south"