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.

Decisions that profoundly ________(1)_________ not only the present ________(2)__________ succeeding generations, should not be taken in a ______(3)________, or through one-time referendums. This is basic political common ________(4)________. But in a voter turnout of 72.2 per cent, 51.9 per cent decided that Britain should exit the European Union (EU). The _________(5)__________ of the Brexit vote are painfully clear.