correct answer for the given blank out of the four alternatives.

The main failings were of conception and a political willingness to settle ____(1)_____ easy options. ______(2)_________ the expansive declarations of the need "to maintain effective security of all nuclear materials, _______(3)________ includes nuclear materials used in nuclear weapons”, the summits narrowed their ______(4)_________ to civilian holdings _______(5)___________ non-nuclear weapon states.