The question is asking to state or choose among the following choices that state how many brain connection will be present on average in a child that is about three years old. Base on my research, the possible answer would be <span>One trillion. I hope you are satisfied with my answer and feel free to ask for more </span>
Answer: I'm assuming this is a grammar correction...
In this case, your answer would be a) planner's job. Assuming the planner is a person, we would insert the 's because we are describing his/her job. We remove the comma because it is placed incorrectly in the sentence.
Hope this helps!
A, the American Revolution