Concept:Education is considered bipolar when it involves a constant interaction between two key elements: the teacher and the learner.Explanation:John Adams stated that education is a bipolar process because it has two main aspects: the teacher and the child (or taught).This means education always involves a two-way interaction between the educator and the educand.Other thinkers like John Dewey described education as tripolar, adding society as a third pole.But the idea of education being bipolar is specifically attributed to John Adams.Answer:A. Adams