Which of the following fields of management focuses on establishing and maintaining consistency of a system's or product's performance and its functional and physical attributes with its…

Configuration management (CM) is a systems engineering process for establishing and maintaining consistency of a product's performance, functional, and physical attributes with its requirements, design, and operational information throughout its life. This definition precisely matches the question's description.

Risk management identifies, assesses, and controls threats to an organization's capital and earnings, not primarily focused on system attribute consistency.

Change management focuses on managing the organizational and individual transition associated with changes in processes, systems, or organizational structure, distinct from managing system consistency.

Procurement management involves acquiring goods and services from outside the project team, which is unrelated to maintaining system attribute consistency.