Dr. Azure is conducting a research in the area of psychophysics. Psychophysics is described to be a branch of psychology where it deals with the relationship of a mental phenomena and as well as the physical stimuli that Dr. Azure is doing above in the scenario.
Answer:
The correct answer is option 1. a stimulus in the presence of which a response will be reinforced
Explanation:
We call discriminative stimuli to those stimuli that indicate the probability that a given response is reinforced. The presence of a discriminative stimulus makes the appearance of the responses that have been reinforced in their presence more likely.
It's a neutral stimulus that indicates when the response may or may not lead to the desired consequence. That is, the discriminative stimulus indicates whether the enhancer is available.