Answer: Apply target cost-per-acquisition (CPA) bidding to drive conversions at her desired CPA.
Step-by-step explanation: In this case the customer wants to gain administrative division at her hotel, looking for ways to save time and optimize. We can most efficaciously do this by utilizing target cost-per-acquisition (CPA) bidding in order to thrust interpretation at her desired CPA.
Therefore the correct option in this case is (d)