Answer:
C). A revenue-focused bidding strategy.
Explanation:
As per the details given in the question, 'a revenue-focused bidding strategy' will most likely assist the marketer in upkeeping his needs as his key focus is to discern a particular return on his investment that he made for the monthly ad spend made by him. This automated strategy of bidding will allow him to keep track of the revenue and escalate the return. Thus, option C is the correct answer.
