What does "pruning" the brain mean?
a) more brain connections are made
b) the brain gets rid of some of the less effective connections
c) the brain grows new cells
d) all of the above

Well, l think that some effective communication is, emotional barriers and lack of attention, interest distraction or irrelevance. also some physical disabilities such as hearing problems or speech difficulties.      l hope i am correct  and you good luck.

Answer (185 billion dollars).