ACG Certified Commissioning Authority (CxA) Practice Exam 2026 - Free CxA Practice Questions and Study Guide

In construction project practice, PC denotes the party that has the prime contract with the owner and is responsible for delivering the project, coordinating all subcontractors, and ensuring safety, quality, schedule, and compliance. That makes Prime Contractor the correct expansion because it identifies the main contracting entity that oversees the whole project.

Project Coordinator is typically an administrative team role within the project, not the contractor that holds the contract with the owner. Program Controller isn’t a standard construction job title. Principal Contractor appears in some regulatory frameworks and contexts, but the term most commonly used in contract and coordination discussions is Prime Contractor, which is why that option fits best.