Final answer:
Operations Research is the discipline that utilizes mathematical techniques for optimizing organizational parameters such as transportation and inventory control.
Step-by-step explanation:
The discipline that focuses on mathematical techniques for optimizing parameters of organizations, such as transportation and inventory control, is Operations Research (E). Operations Research uses various mathematical methods and models to improve decision-making and efficiency within organizations. These methods include simulation, linear programming, and other analytical approaches to solve complex problems related to resources, logistics, production schedules, and more.