Entering a priority (e.g., "High") in a quality notification (transaction QM01):

Calculate the Notification Start and Finish Dates (C): The priority (set in Customizing, SPRO > QM > Quality Notifications > Define Priorities) triggers the system to calculate required start and end dates based on response times linked to the priority (e.g., 24 hours for "High"). This is standard behavior for time-sensitive notifications.

Create Activities Automatically (A): Activities are logged manually or via action boxes, not priority.

Create Tasks Automatically (B): Tasks require a response profile, not just priority.

Calculate Malfunction Dates (D): Malfunction dates are specific to equipment notifications (e.g., F2), not driven by priority alone.

Thus, "Calculate the notification start and finish dates" is the correct answer.References: SAP Help Portal - "Priorities in QM Notifications"; SAP S/4HANA QM User Guide - "Notification Processing".