The word "toppled" in the last paragraph is closest in meaning to"________".

A．the different objectives of those involved in these respective pursuit
B．the different ways in which they attempt to extend accepted conventional forms
C．the different methods they employ in the collection of data to support their theories
D．the different principles of organization that they utilize in order to create new works

A．is often quoted in the work of other scientists
B．presents the discovery of a new scientific fact
C．does not relegate particulars to the role of data
D．generates a novel and well-founded generalization