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.

Some writers have claimed that the ___________ of persons are incapable of even fairly correct reasoning, pointing to the absurd ideas entertained by the masses of people as a proof _______ the statement. These writers are probably a little radical _______ their views and statements, but one is often struck ______ wonder at the evidences of incapacity for interpreting __________ and impressions on the part of the general public.