How do you update your remote repository to include the changes you've committed in your local repository?

When you want to update your remote repository with changes you've committed in your local repository, the correct action to take is to use the git push command. This command uploads your local commits to the specified branch on the remote repository. Essentially, it acts as a way to synchronize your local work with the remote, ensuring that any changes you've made locally are reflected in the remote repository.

Using git push is crucial after you've made commits because it effectively sends those commits to where other collaborators can access them, which is a central part of collaborative work in software development. Once the push is successful, others can pull those latest changes to incorporate them into their own local versions.

The other options do not fulfill this purpose. For instance, git commit is used to save changes to your local repository, but it does not do anything with the remote repository. git update is not a valid git command; it does not exist in the git command set. Lastly, git merge is used to combine different branches in your local repository but does not interact with remote repositories directly. Thus, pushing is the correct method to ensure your local updates are reflected remotely.