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.
You need a variable. If something happens once it could just be chance. Like if you got a lottery ticket and won, it would just be chance. Not the thing that happens the most.
This social class can often be called the "working poor". This group may also be called the "lower" or "under" class. The majority of the working poor work in service jobs, like waiters or waitress, unskilled labor positions, farmers or maids and other minimum wage positions with two or three jobs that have little to no extra benefits. The majority are also relatively uneducated, with less than 50% graduating high school.
The answer is indeed a, b ,c ,d
