What term describes the combination of hardware and operating system that constitutes a functional computer system?

The term that aligns with the description of a combination of hardware and operating system that forms a functional computer system is referred to as a platform.

A platform encompasses both the physical components (hardware) as well as the software layer (operating system) that enables the operation of applications and services on a computer system. This synergy allows users and developers to interact with the system effectively.

In contrast, other choices represent different concepts: an interface typically pertains to the point of interaction between a user and a computer or between different software components; a framework generally describes a specific structure for organizing and developing software applications, providing foundational support; while an environment often relates to the context in which a system operates, which may include settings, variables, and configurations but does not specifically pertain to the hardware and operating system combination.