Dr. Eco has a strong belief that global warming is a theoretical myth. In recent years, however, the increased rate of polar ice cap melt has forced him to alter his theory, and he is now a strong advocate against greenhouse pollutants. A Piagetian would most likely describe Dr. E.co's theoretical conversion in terms of_______________.
a. the one-to-one principle.
b. overextension
c. equilibration
d. abstract thinking
