Concept:Registered mail offers special security and proof of delivery for important posted items.
Explanation:The question asks for the best postal method to confirm that an item reaches the named address.
Recorded delivery provides a proof of posting and delivery, but not the highest level of security.
Registered mail is handled separately and safely, with a signature collected from the recipient.
It also gives compensation if the item is lost or damaged in transit.
Therefore, among the options, registered mail is the most reliable way to ensure delivery to the correct addressee.
Answer:B. registered mail