Bulksheets are which file format?

The correct answer is .xls because bulksheets are typically provided in the Excel (.xls) file format. This format allows advertisers to manage large-scale campaigns by inputting and editing campaign data, such as bids, targeting settings, and creative information, in a structured, easy-to-edit spreadsheet format. The .xls format is widely compatible with many tools and platforms, making it convenient for campaign management and optimization. While other formats like .csv or .tsv can also be used for data storage, bulksheets specifically utilize the .xls format for Amazon Advertising to handle bulk uploads and updates efficiently.