Kurt Lewin Once Wrote,"There Is Nothing So Practical as a Good

Kurt Lewin once wrote,"There is nothing so practical as a good theory." By that,Lewin was referring to the idea that

A) to solve social problems, psychologists must understand the processes that underlie them.
B) basic researchers should have a higher status in the field of social psychology.
C) basic researchers should not be afraid to conduct applied research aimed at solving social problems.
D) applied researchers should have a higher status in the field of social psychology.
E) the line between basic and applied researcher is clearer in social psychology than in other sciences.