In ServiceNow, the Application Picker is a user interface element that allows developers to select the active application they are working on. The selected application determines the Application Scope, which defines the boundaries within which application artifacts (like tables, scripts, and UI components) reside and operate.
* A. Selecting Global in the Application Picker sets the Application Scope to Incident: This is incorrect. Selecting "Global" sets the scope to the global application, not specifically to the Incident application.
* B. Global is a reserved application that does not appear in the Application Picker: This is incorrect. The "Global" application is available in the Application Picker and represents the global scope.
* C. Selecting an application from the Application Picker sets the Application Scope: This is correct.
Choosing an application from the Application Picker establishes that application's scope as the current context for development and configuration.
* D. Selecting an application from the Application Picker does not set the Application Scope: This is incorrect. The Application Picker directly influences the current Application Scope.
For more information, refer to the official ServiceNow documentation on Application Scope.
For a visual demonstration of restricting access to your ServiceNow application, you may find the following video helpful:
Restricting Access to your ServiceNow App

Options for Creating Tables in Guided Application Creator:
Create a table from scratch: This option allows you to define a completely new table with custom fields and configurations.
Create a table from a template: You can use predefined table templates to speed up table creation. Templates often include pre-configured fields and settings.
Extend a table: This allows you to create a new table by inheriting fields and functionality from an existing table, enabling reuse and consistency.
Why Other Options Are Incorrect:
Option A (Link to external tables): Linking to external tables is not an option provided in the Guided Application Creator; external data is typically accessed through integration methods.
Option D (Run import jobs): Import jobs are used for data migration, not for table creation in the Guided Application Creator.
Option E (Upload a spreadsheet): While uploading a spreadsheet can create tables, this is a feature of Import Sets, not the Guided Application Creator.
Option F (Use API calls): API calls are for integration and not an option for creating tables directly in the Guided Application Creator.
ServiceNow Developer Documentation on Guided Application Creator.