From Piaget's Perspective, the Great Leap Forward That Begins at Age

Multiple Choice

From Piaget's perspective, the great leap forward that begins at age six or seven is

A) the resolution of initiative versus guilt and the start of industry versus inferiority.
B) the use of symbols.
C) the abstract, flexible, and combinational logic of formal operations.
D) the discovery of a set of general rules for examining and interacting with the world.
E) based on the internalization of egocentric speech.