John Dewey's "Instrumentalism

John Dewey's "instrumentalism":

A) said that learning to play music literally made the brain grow larger
B) said that the most important years for education came between sixth and ninth grades and led to the creation of "middle schools"
C) claimed that vocational trades were absolutely necessary for Americans
D) said that ideas were instruments for action
E) argued that education for the masses was impossible in a polyglot society