Which of the following states that for each of our five senses, the amount of change in a stimulus that is necessary to produce a just noticeable difference (jnd) depends on the intensity at which the stimulus is first presented?

Weber's law

Explanation:

According to Weber, the psychologists proposed that for each of our five senses, the degree of change in the stimulus that is required to product a just noticeable difference is reliant on the degree of intensity of the first presented stimulus. In other word, the change in a stimulus that will be just noticeable is constant with its first or original stimulus.