title: Merge or Rebase or Branch Default In Android Studio? What are the differences?
body: <p>I read <a href="https://stackoverflow.com/questions/24393148/android-studio-update-project-merge-vs-rebase-vs-branch-default">this</a> but that did not explain Branch default. It would be nice to have a short explanation for all in one post.
  thank you</p>
  
  <p><a href="https://i.stack.imgur.com/M4hAa.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/M4hAa.jpg" alt="enter image description here"></a>
  <a href="https://i.stack.imgur.com/TVJzl.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/TVJzl.jpg" alt="enter image description here"></a></p>