Crosby is known for promoting which quality concept in the 1950s?

Crosby is best known for the concept of Zero Defects, which emphasizes the idea that any level of defects is unacceptable in producing quality products. This philosophy supports the belief that quality should be built into the process from the very beginning, and it encourages organizations to strive for perfection—essentially, to design processes in such a way that errors do not occur. By advocating for Zero Defects, Crosby sparked a transformation in how organizations approached quality management, shifting the focus from detection of defects after they occur to preventing them during the production process. This proactive approach is foundational to modern quality methodologies.

The other options reflect larger frameworks or tools related to quality management, but they are not specifically attributed to Crosby. Total Quality Management represents a holistic approach to long-term success through customer satisfaction, Quality Assurance focuses on the systematic processes that ensure quality outputs, and Quality Control Charts are statistical tools used to monitor and control processes. While all these concepts are vital to organizational quality practices, Zero Defects is the specific philosophy that Crosby championed during his influential work in the 1950s.