Answer:
The answer is A. operant conditioning.
Explanation:
This type of conditioning occurs through negative or positive outcomes, which determines people's behaviour. It is also called instrumental conditioning.
The basis for this theory was explained by B.F. Skinner, who believed it was necessary to look only into the external factors that affect people's interactions. Since then, it has influenced the development of behaviourist theories, as well as the foundation for classical conditioning.