Final answer:
To remove a notification in Android, call the 'cancel' method on the Notification Manager with the notification's ID.
Step-by-step explanation:
To remove the notification with ID NOTIFICATION_ID using the Notification Manager object named manager, you would call the cancel method on the manager with the ID as its argument. The code statement for this action would be manager.cancel(NOTIFICATION_ID);
The correct statement to remove the notification is:
manager.cancel(NOTIFICATION_ID);
By calling the cancel() method on the manager object with the NOTIFICATION_ID constant value as the argument, the notification will be removed.