What should be done to comply with the policy disallowing third-party app OAuth permissions to Google Drive?

To ensure compliance with a policy that disallows third-party app OAuth permissions to Google Drive, it is critical to focus on high-risk access settings. Disabling high-risk access for Drive specifically targets the permissions that allow third-party applications to gain access to Drive data. This setting effectively prevents any external applications from requesting OAuth authorization for Drive, thereby protecting sensitive information and aligning with organizational policies regarding data security and access control.

In contrast to other options, which either disable all API access or external sharing generally, disabling high-risk access hones in on the specific concern of unauthorized third-party interactions with Drive data. This allows other functionalities to remain intact if they are deemed safe, while still tightening security specifically against unwanted third-party access. This approach balances security with usability, ensuring that only trusted applications can interact with sensitive files and documents stored in Google Drive.