imo, the best way of answering it was to use relevant examples of the policies in addressing the issue and by comparing it to the target rates/other economies (general targets), the effectiveness can be determined from that.
The way the question is written isn't about the policies being individually effective at dealing with issues, but rather by incorporating the government into the question, you have to take into consideration the specific use of policies by the government.
Simply put, limitations aren't necessarily essential as policies with limitations aren't used by the government. You can certainly get 20/20 without mentioning limitations. You do have to mention conflicts between them eg the pursuit of growth and inflation.
It certainly depends how you structured it as well. If you went under paragraphs about the policy and talked about the objectives within, limitations would be more relevant. If you went from the objectives and discussed policies to meet them, limitations would be less relevant.