In accordance with Kurt Lewin's concept of 'Life Space', the complex of all non-psychological facts that surround it is called,

In accordance with Kurt Lewin's concept of 'Life Space', the complex o

1.	In accordance with Kurt Lewin's concept of 'Life Space', the complex of all non-psychological facts that surround it is called,
A.	a vector
B.	a barrier
C.	a foreign hull
D.	a force
Answer» D. a force