Which is a benefit of using Adwords Editor?

• Multiple users can share archives and proposals for an account.
• Conflicts between changes made by importing a file do not need to be resolved prior to posting.
• Users with My Client Center (MCC) Reports Access can make edits to an account.
• Multiple users can make offline changes to Account Preferences.

The correct answer is:

• Multiple users can share archives and proposals for an account.

Explanation: Any advertiser with any size account can use Adwords Editor, but it’s especially useful for accounts with multiple campaigns and long lists of keywords or ads. For example, you can:

• Use bulk editing tools to make multiple changes quickly.
• Export and import files to share proposals or make changes to an account.
• View statistics for all campaigns or a subset of campaigns.
• Manage, edit, and view multiple accounts at the same time.
• Search and replace text across ad groups or campaigns.
• Copy or move items between ad groups and campaigns.
• Undo and redo multiple changes while editing your campaigns.
• Make changes in draft before uploading them to your account.
• Keep working even when you’re offline.

You can read more here: https://support.google.com/partners/answer/2484521?hl=en