An enterprise user cannot authenticate to the office Wi-Fi. Which of the following steps should most likely be taken to resolve the issue?

Reinstalling the OS is a drastic and time-consuming measure that should be a last resort after extensive troubleshooting, not an initial step for a Wi-Fi authentication issue.

In an enterprise environment, Wi-Fi authentication often relies on secure protocols like 802.1X, which commonly use machine or user certificates for authentication. If a user cannot authenticate, it's highly probable that the machine's certificate is either missing, expired, revoked, or incorrectly configured, preventing the supplicant from establishing a trusted connection with the authentication server.

Resyncing Group Policy primarily refreshes policy settings and might not directly address a certificate-based authentication failure if the certificate itself is the issue.

Power cycling the switch would affect all users connected to that switch and is unlikely to resolve an issue specific to one user's machine authentication.