Final answer:
The root zone uses NS (Name Server) records to delegate control of the .org TLD to the .org registry by pointing to its authoritative name servers.
Step-by-step explanation:
The root zone's delegation of control for the .org top-level domain (TLD) to the .org registry is facilitated by using a specific type of DNS record known as the NS (Name Server) record. The NS record is responsible for directing traffic to the authoritative name servers for a domain, which in this case would be the servers that are responsible for managing the DNS records for all domains registered under .org. Therefore, to delegate control of .org to the .org registry, the root zone contains NS records pointing to the .org registry’s name servers.