Final answer:
Endpoint Manager is the Microsoft 365 service or app that enables you to manage users' devices.
Step-by-step explanation:
The correct answer is c) Endpoint Manager. Endpoint Manager is a Microsoft 365 service or app that allows you to manage users' devices. It provides a centralized platform for managing and securing devices like smartphones, tablets, and computers.
With Endpoint Manager, you can control settings, deploy apps, apply security policies, and monitor the health and compliance of devices.