Which of the following options allows you to edit multiple campaigns simultaneously using a spreadsheet?

Bulk operations allow you to download a spreadsheet containing data from multiple campaigns, make changes offline, and then upload the updated spreadsheet to apply those changes simultaneously. This is efficient for managing large numbers of campaigns or making widespread adjustments. While an API (Application Programming Interface) can also automate changes across multiple campaigns, it requires programming knowledge to implement and is not a direct spreadsheet-based editing method for most users. Therefore, for spreadsheet-based simultaneous editing, bulk operations are the correct choice.