Your company has a private GitHub repository.
A new developer needs to make a change to a project in the repository.
What should the developer do first?

A.
Create a new local branch of the repository.

B.
Create a new remote branch of the repository.

C.
Commit the remote repository.

D.
Clone the repository locally.

Explanation:
With distributed version control systems like Git, if you want to make a change to a project you copy the whole repository to your own system. You make your
changes on your local copy, then you “check in” the changes to the central server.

http://techcrunch.com/2012/07/14/what-exactly-is-github-anyway/