Final answer:
The technology used for multiple private addresses to access the Internet through a single public address is Network Address Translation (NAT).
Step-by-step explanation:
The technology used for multiple private addresses to access the Internet through a single public address is called Network Address Translation (NAT). NAT allows a router to assign private IP addresses to devices on a local network, which are then translated to the public IP address when accessing the internet. This allows multiple devices on the same network to share a single public IP address.