A systems administrator creates a script that validates OS version, patch levels, and installed applications when users log in. Which of the following examples best describes the purpose of this script?

The script enforces a security baseline by verifying that each system meets defined configuration standards (OS version, patch levels, installed applications) upon user login. This ensures continuous compliance and reduces the attack surface. Resource scaling (A) involves dynamically adjusting computing resources based on demand, which is unrelated to this script's function. Policy enumeration (B) is the process of discovering or listing existing policies, not enforcing them. Guard rails implementation (D) refers to setting boundaries or controls to prevent unintended actions, but "baseline enforcement" is a more precise and comprehensive description of a script that actively checks and maintains system configurations against a standard.