Final answer:
For a Membership renewal drip campaign, the automation should include an import activity, three filter activities to segment the audience based on renewal timing, and three send definitions to send emails at these specific times.
Step-by-step explanation:
The customer's automation for a Membership renewal drip campaign should include steps that allow for the timely sending of emails based on the renewal dates of the members. The correct steps to implement would be A. Import activity > Three filter activities > Three send definitions to the filtered audiences. Firstly, an import activity is needed to get the master audience data into the system. Then, three separate filter activities should be created to segment the audience based on the timing of the communications: one month prior, one week prior, and on the renewal date itself. Finally, send definitions need to be established to send out the appropriate email to each filtered audience at the scheduled times.