Git and GitHub Overview

Tracking changes in source code during software development (correct)

Coordinating work among project managers

Hosting web-based repositories

Managing non-linear workflows

Speed, centralized control, and data integrity

Flexibility, simplicity, and centralized control

Efficiency, centralized workflows, and data security

Speed, data integrity, and support for distributed, non-linear workflows (correct)

Code optimization features

Exclusive support for linear workflows

All of the distributed revision control and source code management functionality of Git (correct)

Web-based project management tools