What does single-sign-on enable users to do?

Single sign-on (SSO) enables users to access multiple applications and services with a single set of credentials, streamlining the login process and enhancing user experience. This means that once a user authenticates themselves through the SSO, they can access various applications and resources without needing to log in separately for each one.

This process not only simplifies access for users but also strengthens security by reducing the number of passwords that must be managed. By minimizing the frequency of credential input, SSO helps to mitigate potential security risks associated with password fatigue, where users might resort to weaker passwords or use the same credentials across multiple platforms.

The other options do not accurately reflect the core function of SSO. Accessing multiple applications with different credentials contradicts the essence of SSO, which is designed precisely to eliminate the need for multiple sets of credentials. Limiting access to one application at a time and frequently changing credentials also go against the convenience and efficiency that SSO is meant to provide.