Final answer:
OSCM deals with managing complex aspects of systems that produce goods or deliver services, focusing on challenging tasks like sourcing materials and logistics, which is true.
Step-by-step explanation:
The statement that Operations and Supply Chain Management (OSCM) is concerned with the management of the trickiest parts of the system that produces a good or delivers a service is true. OSCM is a multifaceted aspect of businesses that involves the design, operation, and improvement of the systems that create and deliver the company's primary products and services. Managing these complex systems often includes dealing with challenging issues such as sourcing raw materials, production scheduling, inventory management, quality control, and logistics.