Final answer:
The increased use of project management can be attributed to factors such as the compression of production life cycle, global competition, and corporate downsizing. However, reduced customer focus is not a factor that led to the increased use of project management.
Step-by-step explanation:
The correct answer is c. reduced customer focus. The increased use of project management can be attributed to several factors including the compression of production life cycle, global competition, and corporate downsizing. These factors have necessitated the need for efficient project management techniques to improve productivity, meet deadlines, and achieve success in a competitive business environment. However, reduced customer focus is not a factor that led to the increased use of project management. In fact, project management often emphasizes the importance of understanding and meeting customer requirements to deliver successful projects.