What does an end user need to access a GuideWire application?

To access a GuideWire application, an end user requires a supported web browser in addition to a valid username and password. This requirement ensures that users can authenticate their identity and securely access the functionalities provided by the application. Supported web browsers are essential because they need to render the application's user interface correctly and facilitate interaction with the backend services.

Having a valid username and password is a crucial part of access control, ensuring that only authorized users can enter the system. This not only protects sensitive data but also enables the application to maintain user-specific preferences and settings.

While other options might seem plausible, they do not encompass the primary necessities for accessing the application. An email or phone number might be used for communication or account recovery but are not directly relevant for logging into the application. Specific software installations on personal computers may also be unnecessary if the application is designed for browser-based access. Lastly, having only a username without the password would not grant access, as proper authentication usually requires both elements. Therefore, the answer encapsulates the essential requirements for user access to GuideWire applications comprehensively.