In the following passage some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.
Targeting inflation comes from a belief that policy should be .......(1).......and transparent, so that the private sector can factor this .......(2).......their decision-making. The question that this ........(3)......is: are there more "complicated" policies which .......(4).......better? I just note that one such policy is called "nominal income targeting".
.......(5).......it is more complicated and the private sector is deemed to be intellectually challenged.