Final answer:
The line between public information and private information is called a privacy boundary. It determines what information individuals choose to share with others and what information they keep private. Examples of private information include personal details like name, address, and social security number.
Step-by-step explanation:
The line between public information and private information is called a Privacy boundary. A privacy boundary is the separation between what is personal and what is accessible to the public. It determines what information individuals choose to share with others and what information they keep private. For example, your name, address, and social security number are part of your private information, while your favorite movie or hobby can be considered public information.