Answer:
A. stimulus discrimination
Explanation:
Stimulus discrimination -
Discrimination for stimulus refers to the practice or the ability to differentiate between two different stimulus , is referred to as the stimulus discrimination .
The ability of stimulus discrimination is derived from the method of stimulus generalization .
In simple terms , it refers to the ability or the tendency of the living organism to react or respond to only particular stimuli , is referred to as stimulus discrimination .
Hence , from the given scenario of the question ,
The correct answer is stimulus discrimination .