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

The option that is used to inform the addressee that a registered parcel is ready for collection is a slip. A slip is a small piece of paper that is usually left by the delivery person at the addressee's location when they are not available to receive the package. The slip contains important information such as the name and address of the post office or delivery center where the package is being held, along with a unique tracking number and instructions on how to retrieve the package. When the addressee receives the slip, they can use it to go to the designated post office or delivery center to collect their package. The slip is an important document, and the addressee must present it along with a valid form of identification to claim their package. Therefore, if you receive a slip in your mailbox or at your doorstep, it means that a registered parcel is waiting for you to collect it from the designated post office or delivery center.