Answer:
potential energy I hope this helps :)
Common. People who are common to us, at least in most cases...
China is closer to a pure command economy
In the story given Carla is demonstrating <em><u>a means-end behavior.</u></em>
Explanation: The means-end behavior is noticed on infants and it is when they intentionally react to actions seen by them with the goal of obtaining something. They demonstrate a striking behavior waiting for a cause and effect actions and reactions.