Critics of Constructivist Approaches to Teaching Science Repeatedly Emphasize What

Critics of constructivist approaches to teaching science repeatedly emphasize what argument?

A) Not enough attention is given to discipline-specific information.
B) Constructivist approaches have not been supported by enough research studies.
C) More lecture-oriented models of teaching have proven to be more significantly linked to science achievement.
D) Constructivist approaches focus on the memorization of facts, which does not promote critical thinking about scientific principles.