Edwin, an employee at an auto assembly plant for a u. s. auto manufacturer, manages a group of employees who measure the quality of parts that arrive on rail cars from mexico and other countries. as a receiver of auto parts from other suppliers, edwin works in

Supply Chain management.

Explanation:

Based on the information provided within the question it seems that from what Edwin is doing he is working in Supply Chain management. This department focuses on managing the flow of goods and services, including all the tasks and processes that take place from the input of raw materials to the output of a fully functional product/service. Which seems to be the case since Edwin manages the employees and acts as a manager to an assembly department that receives auto parts from suppliers, thus managing the inflow and outflow of parts for the U.S. auto manufacturer.

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