Answer:
Gatekeeper
Explanation:
According to my research on different employment roles that exist within a company, I can say that based on the information provided within the question Dana is acting as a Gatekeeper in the purchasing process. The term "Gatekeeper" refers to someone who has the ability to withhold access to something from other people.
I hope this answered your question. If you have any more questions feel free to ask away at Brainly.