The three-term contingency states that in the presence of a a produces a(n) ; discriminative stimulus; expectancydiscriminative stimulus; response; reinforcerdiscriminative stimulus; expectancy; responsereinforcer; discriminative stimulus; response

the answer is: discriminative stimulus; response; reinforcer

Three term contingency stated that a behavior that conducted by a certain individual at the current time is most likely a result of the behavior that the individual did in the past.

It propose that this set of behavior is always undergone three steps of  discriminative stimulus,  response, and reinforcer:

- Discriminative stimulus refers to a certain situation or object that can trigger a certain action or behavior

- Response refers to the action/behavior that made in reaction to the stimulus.

- Reinforce refers to additional reward or punishment that can help to ensure that a certain response would be repeated again in the future.

semi-desert lowlands, hope this !

answer; personal construct;