Scheduling report and emailing file to the director is the correct answer. This option allows you to create a report of sends across all business units using the Email Performance by Business Unit report type in Analytics Builder. You can then schedule the report to run daily and email the file (CSV or XLS) to the director or any other recipients. This way, you can ensure the report is sent to the director each day without manually running and exporting the report. Scheduling report and emailing the link to download is not a valid option, as this option only allows you to email a link to access the report online, not to download the file. Scheduling report to export as a web page is not a valid option either, as this option only allows you to export the report as a web page, not to email it. You can learn more about this in the [Email Reporting Tools] module on Trailhead.