Which default timing card is available when the Automated Maintenance Tasks are being accessed at...

When accessing the Automated Maintenance Tasks in AEM via the specified URL, the default timing card available is the "Daily Maintenance Window". AEM provides a set of pre-configured maintenance tasks that can be run on a daily, weekly, or monthly basis, but the daily window is the standard default card that is presented in the maintenance console for configuring these tasks.

Monthly Maintenance Window (Option B) and Quarterly Maintenance Window (Option C) are not the default options that are presented in the AEM maintenance console.