Which three scopes can be used to set different System Configuration values in Magento? (Choose three.)

You are adding a new menu item to the admin backend which will link to a custom backend page.
The declaration of the route:

What do you specify as the menu item action attribute value so it links to /admin/mycompany/mymodule/?

You are tasked to install an extension to the merchant's Magento instance.
The extension is developed by the company called MyCompany and its codebase is available from all four locations listed below.
Which two installations options do you choose from to prevent version conflicts during upgrade? (Choose two.)

While developing a module you need to modify an existing Data Patch.
How can you force Magento to execute an existing Data Patch file again?

As you are scanning folder in the vendor/module-catalog directory, you see a directory that is named Ui. What is this folder's purpose?