The figure given below shows three Short Run Average Total Cost (SRATC) curves and the Long Run Average Total Cost (LRATC) curve of a firm. Figure 7.3 
Which of the following would account for the shape of the long-run average-total-cost curve in Figure 7.3?
Definitions:
Negative Reinforcement
Negative reinforcement involves the removal of an undesirable or unpleasant stimulus to increase the likelihood of a particular behavior being repeated.
Positive Reinforcement
A process in psychology that involves increasing the likelihood of a behavior by following it with a desirable consequence or reward.
Negative Reinforcement
A process in behavioral psychology where the removal of an unpleasant stimulus strengthens or increases the probability of a response.
Conditioned Taste Aversion
The learned avoidance of a certain food or drink because it has been associated with an unpleasant or aversive experience.
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