When Kurt Lewin Said, "There Is Nothing as Practical as a Good

When Kurt Lewin said, "There is nothing as practical as a good theory," he meant that ____.

A) many theories are overly abstract; a good theory should be based on directly observable facts
B) many theories are overly abstract; a good theory should make predictions about directly observable phenomena
C) although they may seem impractical, theories can be very important in helping to stimulate practical ideas and research
D) he was opposed to overly theoretical work and a major proponent of applied research