Difference threshold refers to the just-noticeable difference between two stimuli (Option D). This difference represents the minimum level of stimulation that can be detected by an individual at least half the time.
An absolute threshold can be defined as the lowest level of a stimulus which can be detected by a person at least half the time.
In psychology, an absolute threshold is defined as the minimal amount of energy required to achieve the stimulation of the sensory receptors.
Stimuli from the surrounding environment include touch, light, sound, etc.
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