Which statement best describes scope in OAuth?

• A. Defines the level of access to the application
• B. Defines the authentication method
• C. Defines the token lifetime
• D. Defines the MIME type of responses

Answer: (A)

Scope in OAuth defines the level of access the client is granted to resources and operations on behalf of the user. It specifies what permissions the access token allows, such as which APIs can be called and what actions are permitted (for example, read vs. write). The resource server enforces these permissions when validating the token, ensuring the client can only perform allowed operations. This concept does not describe how authentication happens, which flow is used, how long the token remains valid, or the MIME type of responses. Those aspects are separate: authentication method comes from the chosen OAuth flow (or OpenID Connect for identity), token lifetime is determined by token expiration policies, and MIME types relate to HTTP content types. So scope best describes the access level granted to the application.