Asnack manufacturer realizes that he must increase the salt content of his company's chips by at least 3% in order for a sample of consumers to notice that the chips are saltier than they were before- this example most nearly illustrates the concept of a(n):

The Answer to this question is Difference threshold.

Explanation:

A difference threshold otherwise known as Just noticeable difference is the  smallest level of increase or decrease in stimulation required to sense that a change in stimulation has occurred . The concept of difference thresholds applies to different areas such as: touch, taste, sight, hearing and smell. These areas have levels that need to be met before any impact can be sensed.

Therefore referring to the question, If the snack manufacturer must increase the salt content of the chip by at least 3% so that consumers can notice the change, he is applying the concept of difference threshold.  

answer; buyer guide;

answer; purpose nondisclosure;