Explanation:
https://docs.microsoft.com/en-us/powerapps/maker/model-driven-apps/model-driven-app-components

We have following task to do,
1) Synchronize data daily - Microsoft Dataverse
2) Access data from an external Microsoft SQL Server instance - Connector (Its not listed in answer)
3) Send an out-of-the box report automatically to specific company executives - Power Automate
4) Ensure that opportunities over a specified amount are approved by a sales manager - Need to check one conditions based on data from CDS - Common Data Service

Explanation:
Box 1: Azure Active Directory
Create the company users in the Azure Active Directory.
Box 2: Power Apps admin center
In the Power Apps Admin center, manage environments that you've created and those for which you have been added to the Environment Admin or System Administrator role. From the admin center, you can perform these administrative actions:
Create environments.
Rename environments.
Add or remove a user or group from either the Environment Admin or Environment Maker role.
Etc.
Incorrect Answers:
Use the Dynamics 365 admin center to review the status of your apps and solutions, apply updates, and manage your Dynamics 365 instances, solutions, and apps.
The Power BI admin portal enables you to manage a Power BI tenant for your organization. The portal includes items such as usage metrics, access to the Microsoft 365 admin center, and settings Note: You use the Microsoft 365 admin center to create user accounts for every user who needs access to model-driven apps in Dynamics 365, such as Dynamics 365 Sales and Customer Service.
Reference:
https://docs.microsoft.com/en-us/power-platform/admin/environments-administration
https://docs.microsoft.com/en-us/dynamics365/marketing/dynamics-365-admin-center
https://powerapps.microsoft.com/sv-se/blog/introducing-admin-center-for-powerapps/