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.
The masses of people accept the most absurd ideas _________ truth, providing they are gravely asserted by some one claiming authority. The most illogical ideas are accepted _________ dispute or examination, providing they are stated solemnly and _____________. Particularly in the respective fields of religion and politics do we find this blind _____________ of illogical ideas by the multitude. Mere assertion _____________ the leaders seems sufficient for the multitude of followers to acquiesce.