Explanation:
< [answer choice] can access App1 from the homepage URL: # Only users listed on the Users and groups blade App1 will appear in the Microsoft Office 365 app launcher for [answer choice]: # Only users listed on the Users and groups blade

According to Microsoft's official documentation and the SC-300: Microsoft Identity and Access Administrator study guide, when you register and configure an enterprise application in Azure Active Directory, two specific settings directly influence user visibility and access:
* User assignment required?
* If this option is set to Yes, Azure AD requires users to be explicitly assigned to the app before they can sign in.
* Only users or groups listed on the Users and groups blade (app assignments) will have access.
* This means that even if the application is visible in Azure AD, users not assigned to it cannot authenticate or launch it.
* Visible to users?
* If set to Yes, the app appears in the Microsoft 365 app launcher (also known as the My Apps portal).
* However, when "User assignment required" is Yes, the visibility is limited only to those who are assigned to the app.
From the exhibit:
* "User assignment required?" = Yes
* "Visible to users?" = Yes
This configuration implies:
* Only assigned users (those listed on the Users and groups blade) can sign in to App1 via the homepage URL.
* App1 will appear in the Microsoft 365 app launcher (My Apps portal) only for those same assigned users.
As per Microsoft Learn documentation ( "Manage enterprise apps in Azure AD" ):
"When User assignment required is set to Yes, only users assigned to the application can access it. If Visible to users is also Yes, the application will appear in My Apps for those assigned users."