Final answer:
A member with a recurring wire transfer established is specifically using option C, Recurring wire transfer, which is a service for sending money at regular intervals.
Step-by-step explanation:
A member who has established a recurring wire transfer is using a service that allows them to automatically send a fixed amount of money at regular intervals. The term 'recurring wire transfer' specifically refers to the wire transfer mechanism repeating at set times. A wire transfer is a method of electronic funds transfer from one person or institution to another. An ACH transfer, or Automated Clearing House transfer, is a different form of electronic funds transfer that usually involves smaller, regular payments, and it may have lower fees than wire transfers.
Therefore, the correct answer to the question is C. Recurring wire transfer.