Answer:
B. children have too much energy and play will rid them of that energy.
Step-by-step explanation:
The surplus energy theory of play suggests that human being have excess of energy that must be released through active play.
This theory is given by Friedreich Schiller. Therefore, the correct answer is children have too much energy and play will rid them of that energy. rest of the option are examples of other theories, whereas Option B is the example of surplus energy theory.