Which of the following is used to inform the addressee that he has a registered parcel for collection?

The item used to inform the addressee that they have a registered parcel for collection is a slip. A slip is a small piece of paper that contains information about the registered parcel and how to retrieve it. It is usually left in the addressee's mailbox or delivered to their doorstep by a postal worker. The slip typically contains details such as the name and address of the sender, the date the parcel was registered, the tracking number, and the location where the parcel can be picked up. The addressee is required to present the slip to the post office or delivery center in order to retrieve the registered parcel.