More Recent Research Suggests That People in Many Cultures Use

More recent research suggests that people in many cultures use reasoning that could be called formal operational thought,provided that they ____.

A) are using materials and tasks familiar to them and relevant to their daily lives
B) are supplied with formal education and proper teaching methods
C) are introduced and taught the scientific approach and scientific theory
D) are taught hypothetical-deductive reasoning before the critical period to learn this cognitive skill expires