The company needs results from you and if you are not able to do it in the first three months you will have pressure. The interviewer wants to check whether you can handle pressure or not. And also how will you deal with this situation. Here is what you can say in your answer: “Getting results from content marketing is a crucial job. It can sometimes give results in the first months or sometimes take 6 months. If the strategies are not giving results then I won't run away from the pressure instead check what's wrong, do AB testing and apply new strategies. I would try to eliminate all the factors that are failing to give me results and do more research to check my mistakes.