What is the primary characteristic of an account that is Managed with Parental Controls?

The primary characteristic of an account that is managed with parental controls is restricted access to certain software and material. Parental controls are designed to help safeguard users—typically children—from inappropriate content or applications. By implementing controls, administrators can specify which apps can be accessed, set time limits for usage, and filter web content to block sites deemed unsuitable. This enhanced security and content management feature is key in providing a safe online and computing experience.

In contrast, the other options do not align with the core purpose of parental controls. Unlimited access to all applications does not reflect any restrictions, which defeats the purpose of managing an account. Sharing files with other users is not inherently restricted by parental controls; it's more focused on content access and not collaboration features. Lastly, the ability to modify system preferences is typically reserved for administrative accounts rather than those with parental controls, which are meant to limit such capabilities to maintain safety and security.