Of the following options, which one is NOT a part of quality control?

Barriers to pharmacy entry are not a part of quality control. Quality control is the process of ensuring that products and services meet certain standards of quality. Barriers to pharmacy entry are factors that make it difficult for people to become pharmacists, such as the cost of education and the requirements for licensure. While barriers to pharmacy entry can help to ensure that pharmacists are qualified, they are not directly related to the quality of pharmaceutical care.