In the following passage some of the words have been left out. Read the passage carefully and choose the correct answer for the given blank out of the four alternatives.

Passage:
The conditions ______ which democracy can _______ are _______ to ________ ; but one thing is _______ that democracy is always a slow growth, whereas
dictators may _____ to ______ and _______ a new _______ with dramatic success, under _______ conditions.