Which is true with respect to Kurt Lewin's contributions?

A) He was much more interested in social problems than practical issues.
B) He emphasized the role of theory in applied work.
C) His biggest contributions were made in the 1990s.
D) all of these

Kurt Lewin's Contributions

Include the development of social psychology theories, group dynamics, and the force field analysis concept.

Theory

A coherent group of propositions formulated to explain a group of facts or phenomena in the natural or social world, often serving as a basis for predictions.

Applied Work

Applied Work involves practical application of theoretical knowledge and research findings to solve problems or improve processes in various professional fields.