Answer:
The colossal heads that they carved.
Explanation:
The Olmecs carved big heads in the south region of the  Gulf of Mexico. These heads are not identical. Each one has its unique features. Experts in the Olmecs society think that they might represent significant people for the Olmec civilization since they are all different and placed in  Olmec centers, which were places of high activity and importance for this society.
 
        
             
        
        
        
Answer:
The correct answer is a.operant
Explanation:
The operant learning has to do with the learning process in which a behavior is modified by reinforcement or punishment.  In this type of learning, the stimuli are presented when a behavior is rewarded or punished come to control that behavior.