Explanation: The best solution for this scenario is Virtual Desktop Infrastructure (VDI). VDI is a cloud service model that provides users with virtual desktops that run on a centralized server. Users can access their virtual desktops remotely from any device, such as a laptop, tablet, or smartphone, using a thin client or a web browser. VDI enables users to access business applications without installing them on their own devices, which ensures that these applications are only installed on company-controlled equipment. VDI also allows users to modify their personal working environments, such as desktop settings, wallpapers, or preferences, which are saved on the server and persist across sessions. VDI can offer benefits such as improved security, reduced hardware costs, centralized management, and enhanced user experience. The other options are not the best solutions for this scenario. Single Sign-On (SSO) is a cloud service that enables users to log in to multiple applications or systems with one set of credentials, which simplifies authentication and improves security. However, SSO does not provide users with remote access to business applications or personal working environments. Secure Shell (SSH) is a network protocol that allows secure remote access to a server or a device using encryption and authentication. SSH can be used to execute commands, transfer files, or tunnel network traffic. However, SSH does not provide users with virtual desktops or business applications. Virtual Private Network (VPN) is a network technology that creates a secure connection between a remote device and a private network over a public network, such as the Internet. VPN can be used to access network resources, such as files, printers, or applications, that are not available otherwise. However, VPN does not provide users with virtual desktops or personal working environments. References: CompTIA Cloud Essentials+ Certification Study Guide, Second Edition (Exam CLO-002), Chapter 2: Cloud Concepts, Section 2.3: Cloud Service Models, p. 64-65