Answer :
Answer:
D. purchases new parts and supplies
Explanation:
According to my research on different business strategies and operations, I can say that based on the information provided within the question they are performing this when they purchase new parts and supplies. This is because one of the responsibilities of management is to make sure that they have all the necessary products that the customers want to buy, so doing so would be a management operation.
I hope this answered your question. If you have any more questions feel free to ask away at Brainly.