Final answer:
The Quality Assurance Department is in charge of the Quality Assurance Program, ensuring that products and services meet established quality standards.
Step-by-step explanation:
The department responsible for overseeing the Quality Assurance Program, which includes functions such as certification, registration, client relations, and professional practice, is the Quality Assurance Department (C). This specialized department ensures that all products and services meet the established standards of quality through planned and systematic activities. They play a pivotal role in maintaining high standards and continuity in the quality of the company's output, whether it pertains to goods or services.