You are the Office 365 administrator for your company.
The company requests that you implement a document collaboration and social networking solution that meets
the following requirements:
Users must be able to join groups to receive project updates.
Any user must be able to post an event.
You need to implement a solution.
Which solution should you implement?

A.
Microsoft SharePoint document libraries

B.
Microsoft Yammer

C.
Microsoft OneDrive for Business

D.
Microsoft SharePoint newsfeeds

Explanation:
Yammer is Microsoft’s private collaboration platform for enterprise social networking.
Unlike public social media platforms such as Twitter, Yammer only allows members to connect with other
members who belong to the same email domain. This unique feature provides corporate employees with the
ability to communicate privately, using a graphical user interface (GUI) that resembles Facebook.
https://about.yammer.com/product/features/