Group Policy Objects (GPO) are a feature in Windows environments that allow administrators to control settings and permissions across user accounts and computers within an organization. GPOs can restrict user permissions to prevent unauthorized installation or modification of applications, making them the best choice for centrally managing user capabilities on Windows systems. While HIPS (Host Intrusion Prevention Systems), Registry, and DLP (Data Loss Prevention) have their own uses, GPOs provide a scalable and enterprise-level solution for application control as per CompTIA Security+ guidelines.