That part of the child's power which is of no use, is thrown out through games. Which theory says this fact?

That part of the child's power which is of no use, is thrown out throu

1.	That part of the child's power which is of no use, is thrown out through games. Which theory says this fact?
A.	principle of excess power
B.	The principle of catharsis
C.	Principle of indemnity
D.	All of the above
Answer» B. The principle of catharsis